WorksheetsPhysics Mechanics
Total questions: 27
Worksheet time: 1hrs 21mins
A ball rolls off a table top and strikes the floor as shown. Given the measurements made, the time the projectile spent in the air is ---.
17 s
0.34 s
0.58 s
0.49 s
A ball rolls off a table and strikes the floor, as shown. If the time the ball spent in the air was 0.58 s, how fast did the ball leave the table?
3.6 m/s
1.2 m/s
2.9 m/s
0.99 m/s
A projectile is launched, and its vertical and horizontal velocities are shown in the graph. What is the magnitude of the projectile's initial velocity?
25 m/s
10 m/s
325 m/s
18 m/s
Which row describes the forces acting on the block when sliding with constant velocity?
The normal reaction between the plane and the block is N and the frictional force between the block and the plane is F. The coefficient of static friction between the block and the plane is μS and initially P is zero.
As P is increased in value, which one of the following statements is true concerning the relationship between F, N and μS ?
When the box is released, a frictional force of 6.0 N acts on it.
What is the acceleration of the box?
A ball is dropped from rest at time t = 0 on to a horizontal surface from which it rebounds. The graph shows the variation of time t with speed v of the ball.
Which one of the following best represents the point at which the ball just loses contact with the surface after the first bounce?
A
B
C
D
Which one of the following is a true statement concerning the vertical component of the velocity and the acceleration of a projectile when it is at its maximum height? (The acceleration of free fall is g.)
A
B
C
D
Juan is standing on the platform at a railway station. A train passes through the station with speed 20 m s–1 in the direction shown measured relative to the platform. Carmen is walking along one of the carriages of the train with a speed of 2.0 m s–1 measured relative to the carriage in the direction shown. Velocity is measured as positive in the direction shown on the diagram.
The velocity of Carmen relative to Juan is
–22 m s–1
–18 m s–1
+18 m s–1
+22 m s–1
An elevator (lift) is used to either raise or lower sacks of potatoes. In the diagram, a sack of potatoes of mass 10 kg is resting on a scale that is resting on the floor of an accelerating elevator. The scale reads 12 kg.
The best estimate for the acceleration of the elevator is
2.0 m s–2 downwards.
2.0 m s–2 upwards.
1.2 m s–2 downwards.
1.2 m s–2 upwards.
A car is heading due East at a speed of 10 m s−1. A bird is flying due North at a speed of 4 m s−1, as shown below.
Which one of the following vectors represents the velocity of the bird relative to a person in the car?
A ball is released from rest near the surface of the Moon. Which one of the following quantities increases at a constant rate?
Only distance fallen
Only speed
Only speed and distance fallen
Only speed and acceleration
Mandy stands on a weighing scale inside a lift (elevator) that accelerates vertically upwards as shown in the diagram below. The forces on Mandy are her weight W and the reaction force from the scale R.
The reading of the scale is
R + W.
W.
R.
R – W.
The graph below shows the variation with time t of the magnitude of the net force F acting on a body moving along a straight-line.
The shaded area represents
the total work done by F.
the change in the kinetic energy of the body.
the change in the momentum of the body.
the change in the velocity of the body.
The graph shows the variation with time t of the velocity v of an object.
Which one of the following graphs best represents the variation with time t of the acceleration a of the object?
A block of mass M is held at rest on a horizontal table. A heavy chain is attached to the block with part of the chain hanging over the table. The block and the chain can slide without friction.
The block is released. Which one of the following graphs best represents the variation with time t of the speed v of the block as it moves on the table?
A body moving along a straight-line has mass 3.0 kg and kinetic energy 24 J. The motion is then opposed by a net force of 4.0 N. The body will come to rest after travelling a distance of
2.0 m.
6.0 m.
8.0 m.
12 m.
A constant force of magnitude F acts on a body. The graph shows the variation with time t of the momentum p of the body.
The magnitude of the force F is
1000 N.
200 N.
20 N.
0.05 N.
Two spheres X and Y are moving towards each other along the same straight line with momenta of magnitude PX and PY respectively. The spheres collide and move off with momenta pX and pY respectively, as illustrated below.
Which one of the following is a correct statement of the law of conservation of momentum for this collision?
PX + PY = pX + pY
PX – PY = pX + pY
PX – PY = pX – pY
PX + PY = pX – pY
A ball is held at rest at point X and is then released. It drops on to a flat horizontal surface and rebounds to a maximum height at point Y.
Which one of the following graphs best shows the variation with time t of the momentum p of the ball as it moves between point X and point Y?
A ball of mass 2.0 kg falls vertically and hits the ground with speed 7.0 ms–1 as shown below.
The ball leaves the ground with a vertical speed 3.0 ms–1.
The magnitude of the change in momentum of the ball is
zero.
8.0 Ns.
10 Ns.
20 Ns.
