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WorksheetsUnit 2.1 and 2.2 Motion and Forces
Total questions: 15
Worksheet time: 15mins
A skydiver jumped out of an airplane. On reaching a terminal speed of 60 ms−1, she opened her parachute. Which of the following describes her motion after opening her parachute?
She went upwards for a short time, before falling to Earth at a speed of 60 ms−1.
She continued downwards at 60 ms−1, but hit the ground with less force.
She continued to fall but reached a new terminal speed of less than 60 ms−1.
She went upwards for a short time, before falling to Earth at a speed of less than 60 ms−1
The graph is a speed versus time graph for an object that is moving in a straight line.
The distance travelled by the object during the first 4.0 seconds is
80m
40m
20m
5m
The diagram shows a person attempting (but failing) to lift a heavy suitcase of weight W. The magnitude of the vertical upwards pull of the girl on the suitcase is P and the magnitude of the vertical reaction of the floor on the suitcase is R.
Which equation correctly relates W, P and R?
W=P+R
W>P+R
W<P+R
W=P=R
Objects A and B collide together. They end up joined together and stationary. During the collision, a force +F is exerted on object A by object B. According to Newton’s third law, there will also be a force of
−F acting on object B.
−F acting on object A.
+F acting on object B.
+F acting on object A.
A student is sitting on a chair. One force that is acting on the student is the pull of gravity. According to Newton’s third law, there must be another force which is
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.
An object moves in the x-y plane. The graphs below show how the component of its velocity Vx in the x-direction and the component of its velocity Vy in the y-direction, vary with time t
The particle is moving in a parabola.
The particle is moving with simple harmonic motion.
The particle is moving with constant velocity in a straight line.
The particle is moving in a circle.
Two balls of different mass are dropped from the top of a tall building one after the other. The distance between the balls
increases with time.
depends on the initial velocity only.
remains constant.
depends on the mass of the balls.
The graph shows how the velocity of a particle varies with time.
Which of the following graphs correctly shows how the acceleration of the particle varies with time?
Two cars, X and Y, are travelling towards a junction. The velocity of car X is VX and car Y is VY.
Which of the following vectors represent the velocity of Y relative to X?
If a moving object is subject to a constant force, which of the following can be correctly deduced from Newton’s first law?
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.
A football is kicked with an initial velocity u at an angle θ to the horizontal and reaches the ground t seconds later.
Ignoring air resistance what is the range R of the football?
ut
ut cosθ
ut sinθ
ut tanθ
The time taken for a stone dropped from rest to fall vertically through 16 m is 2.0 s. Based on these measurements, what is the best estimate for the acceleration of free fall?
4.0 ms−2
8.0 ms−2
9.8 ms−2
10.0 ms−2
A wooden block is sliding down an inclined plane at constant speed. The magnitude of the frictional force between the block and the plane is equal to
zero.
the magnitude of the weight of the block.
the magnitude of the component of weight of the block parallel to the plane.
the magnitude of the component of the normal reaction parallel to the plane.
Which of the following is a correct statement of Newton’s second law of motion?
A force acting on a body is proportional to the mass of the body.
The rate of change of momentum of a body is equal to the net external force acting on the body.
The momentum of a body is proportional to the net external force acting on the body.
A force acting on a body is proportional to the acceleration of the body.
Which of the following quantities can be determined from a speed-time graph of a particle travelling in a straight line?
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
