### Wrong

#### Score: 0 / 1

A horizontal force F = 5.0 N acts on the block. The block slides over the trolley. What is the acceleration of the trolley?

5.0 m s–2

1.0 m s–2

0.75 m s–2

0.60 m s–2

### Wrong

#### Score: 0 / 1

Δp in a time Δt. What is the impulse acting on the object during this change?

Δp

ΔΔt

(Deltap)/(Deltat)

zero

### Wrong

#### Score: 0 / 1

The object must be moving at constant speed.

The velocity of the object in any direction must be zero.

The forces acting horizontally on the object must equal the forces acting vertically on the object.

The resultant force acting on the object must be zero.

### Wrong

#### Score: 0 / 1

(v^2sin^2theta)/(2g)

(v^2cos^2theta)/(2g)

(vsintheta)/(g)

(vcostheta)/(g)

### Wrong

#### Score: 0 / 1

T<W/2

T=W/2

W/2<T<=W

T>W

### Wrong

#### Score: 0 / 1

Vand car Y is VY.

Which of the following vectors represent the velocity of Y relative to X?

### Wrong

#### Score: 0 / 1

What is the average acceleration of the ball between X and Y?

2000 m s–2

4000 m s–2

5000 m s–2

8000 m s–2

### Wrong

#### Score: 0 / 1

8 m s–1.  What is the total upward force acting on the parachutist?

0.N

70 N

560 N

700 N

### Wrong

#### Score: 0 / 1

the upward push of the chair on the student.

the downward force on the student.

the downward push of the chair on Earth.

the upward force on Earth.

10 kg m s–2

30 kg m s–2

40 kg m s–2

50 kg m s–2

206/4V

V

206/210V

4/206V

2.5m

5.0m

10m

14m

### Wrong

#### Score: 0 / 1

20 m s–1.

What is the order of magnitude of the force acting on the stopper?

10–3 N

100 N

101 N

103 N

Ff.

F.

F+f.

f.

### Wrong

#### Score: 0 / 1

What is the acceleration of the train?

sin θ

cos θ

tan θ

g/(tan theta)

### Wrong

#### Score: 0 / 1

decrease

increase

increase then remain constant.

remain constant.

### Wrong

#### Score: 0 / 1

Only the magnitude of the acceleration at a given instant

Both the velocity and the acceleration at a given instant

Only the distance travelled in a given time

Both the distance travelled in a given time and the magnitude of the acceleration at a given instant

### Wrong

#### Score: 0 / 1

2/3.

How much energy is dissipated in pulling the truck up the plane?

16 kJ

24 kJ

32 kJ

64 kJ

### Wrong

#### Score: 0 / 1

Ignoring air resistance what is the range RR of the football?

ut

ut cos θ

ut sin θ

ut tan θ

### Wrong

#### Score: 0 / 1

No forces act on the object.

No resultant force acts on the object.

The momentum of the object is zero.

No work is being done on the object.

### Wrong

#### Score: 0 / 1

What is the time taken for the stone to hit the surface of the lake?

(vsintheta)/g

(vcostheta)/g

(2vsintheta)/g

(2vcostheta)/g

3

2

### Wrong

#### Score: 0 / 1

The object continues to move with a changing velocity.

The object continues to move with a constant velocity.

The object continues to move with a changing direction.

The object continues to move in the same direction.

### Wrong

#### Score: 0 / 1

The object must be stationary.

The object must move with a constant speed.

The resultant force acting on the object must be zero.

No forces must act on the object.

### Wrong

#### Score: 0 / 1

cm s–1 to a speed of 15 cm s–1. What is the impulse acting on the car?

7.5 mN s

37.5 mN s

0.75 N s

3.75 N s

### Wrong

#### Score: 0 / 1

The object must be stationary.

The object must be moving with constant acceleration.

The resultant force acting on the object must be zero.

There must be no external forces acting on the object.

m only

v only

m and v

neither m nor v

0.50 ms−1

2.0 ms−1

4.5 ms−1

8.0 ms−1

### Wrong

#### Score: 0 / 1

Vx in the x-direction and the component of its velocity Vy in the y-direction, vary with time t

xx-direction component

y-direction component

The particle is moving

in a parabola.

with simple harmonic motion.

with constant velocity in a straight line.

in a circle.

### Wrong

#### Score: 0 / 1

v. Air resistance is negligible.

A second projectile has double the mass of the first projectile and is launched with the same velocity. Air resistance is still negligible. Which of the following paths best represents the path of the projectile? (The original path is shown as a dotted line)

### Wrong

#### Score: 0 / 1

Which of the following correctly shows the magnitude of the average velocity and the magnitude of the average speed?

Zero

Increasing

Decreasing

Constant

### Wrong

#### Score: 0 / 1

What is the magnitude of the mean net force on the ball during the collision?

(m(u-v))/((t_2+t_1)

(m(u-v))/((t_2-t_1)

(m(u+v))/((t_2+t_1)

(m(u+v))/((t_2-t_1)

### Wrong

#### Score: 0 / 1

Which of the following correctly compares the magnitudes of the net force and of the drag (resistance) force on the two balls?

### Wrong

#### Score: 0 / 1

Product of force and distance

Product of force and distance moved in the direction of the force

Product of power and time

Product of force and displacement

### Wrong

#### Score: 0 / 1

What is the change in speed of the object shown by the graph?

0.5 m s–1

2.0 m s–1

36 m s–1

72 m s–1

### Wrong

#### Score: 0 / 1

What is the speed of the object just after it leaves the spring?

ysqrt(k/m

ysqrt(m/k

yk/m

ym/k`

### Wrong

#### Score: 0 / 1

Which of the following statements is correct whilst the stone is in motion?

The vertical component of the stone’s displacement is constant.

The horizontal component of the stone’s displacement is constant.

The vertical component of the stone’s velocity is constant.

The horizontal component of the stone’s velocity is constant.

### Wrong

#### Score: 0 / 1

Ignoring air resistance, which statement is true?

Y will hit the ground before X.

Y will hit the ground after X.

Y will hit the ground at the same time as X.

The outcome can only be determined if the initial speed of X is known.

### Wrong

#### Score: 0 / 1

Which quantity is zero when the ball is at the highest point Y of the path?

The horizontal component of the ball’s acceleration

The vertical component of the ball’s acceleration

The horizontal component of the ball’s velocity

The kinetic energy of the ball

### Wrong

#### Score: 0 / 1

A change in which of the following will affect the horizontal distance travelled?

m only

u only

both m and u

neither m nor u

### Wrong

#### Score: 0 / 1

vh and the vertical component vv of velocity of an object are shown on the graphs. Air resistance is negligible.

These graphs could represent the motion of an object fired from a cliff

vertically upwards.

at an angle above the horizontal.

horizontally.

at an angle below the horizontal.

### Wrong

#### Score: 0 / 1

What is the speed of the object after 1.0 s?

0.50ms–1

1.0ms–1

1.5ms–1

2.0ms–1

### Wrong

#### Score: 0 / 1

The horizontal distance travelled by the ball to the point where it lands on the floor depends on

m and h only.

m and v only.

h and v only.

mh and v.

### Wrong

#### Score: 0 / 1

The magnitude of the force exerted on the skier by the tow rope must be

I. greater than the magnitude of the total resistive force acting on the skier
II. equal to the magnitude of the force exerted on the tow rope by the skier
III. equal to the magnitude of the force causing the boat to accelerate.

Which of the above factors is/are correct?

I and II only

I and III only

II only

III only

### Wrong

#### Score: 0 / 1

What can the student deduce from this graph only, and what quantity from the graph is used to make this deduction?

### Wrong

#### Score: 0 / 1

Which of the following correctly describes the changes, if any, to the ball’s vertical speed and horizontal speed?

### Wrong

#### Score: 0 / 1

Which graph shows how the vertical component of the velocity v of the ball varies with t as it falls to the sea?

### Wrong

#### Score: 0 / 1

How much kinetic energy is gained by the girl during the period represented on the graph? Frictional forces are negligible.

200 J

400 J

600 J

1200 J

### Wrong

#### Score: 0 / 1

The object is then projected with the same initial conditions but air resistance is taken into account. Which of the following is the trajectory when air resistance is taken into account? The original trajectory is shown as a dotted line.