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WorksheetsChapter 2 Forces and Motion
Total questions: 12
Worksheet time: 3600secs
Cars P and Q start from rest simultaneously and accelerates at acceleration a and 3 ms–2 respectively.
After 2 seconds, P is ahead of Q by 6 m. Find a.
4.5 ms–2
5.0 ms–2
5.5 ms–2
6.0 ms–2
Which features of a graph is used to determine acceleration?
The slope of a displacement – time graph
The slope of a velocity–time graph
The area under a displacement–time graph
The are a under a velocity–time graph
A body stays at rest, or continues to move with a constant velocity, unless an external force acts on it.
Which of the Newton’s laws is related to the above statement?
Newton’s first law of motion
Newton’s second law of motion
Newton’s third law of motion
A loaded ocean tanker is more difficult to stop than an empty one because it
possesses more kinetic energy
sinks more into the water
possesses more inertia
encounters a smaller frictional force
A golfer swings a club to hit a golf ball. The club continues to swing while the golf ball flies off with a higher velocity. Which of the following quantities is conserved?
Kinetic energy
Potential energy
Momentum
Impulse
An egg falls on a thick mattress. It does not break because the mattress
reduces the time of impact.
prolongs the time of impact.
reduces the kinetic energy of the egg.
reduces the egg’s impulse.
Diagram shows John catches an incoming softball of mass 0.14 kg by moving his hand backwards. The velocity of the ball reaching his glove is 10ms–1. If the time taken to stop the ball is 1.2s, what is the force exerted on his hand ?
0.9 N
1.2 N
2.0 N
8.6 N
Which of the following is not a safety feature of a car ?
Safety belts
Spacious compartments
Air bags
Padded dashboard
The weight of a student is 1/3 the weight of his father.
If the total weight of the student and his father is 600 N, what is the mass, in kg, of the student ?
15 kg
20 kg
30 kg
150 kg
The following situations show equilibrium of forces except
a coconut falling from a tree.
a ship floating at rest in the sea
a car moving up a hill at constant speed
a lamp hanging at rest in a hall.
At which point of the path does the stone possess minimum kinetic energy?
P
Q
R
S
Pak Hashim with a mass of 50 kg climbs a coconut tree to a height of 6m to pick a coconut in 1 minute. What is his power ?
5 W
25 W
50 W
300 W
