Worksheets2.7 Impulse and Impulsive Force
Total questions: 10
Worksheet time: 6mins
The symbol and unit for Impulse are
J and N/s
J and N s
F and N
W and N s
Which of the following situations does not require large impulse force?
A baseball competition
A karate expert breaking a piece of plank with his bare hands
A high jumper jumping across the pole onto a thick mattress
A mother pounding chillies with a pestle
A stationary hockey ball with a mass of 2 kg is given a horizontal impulse of 30.0 N s. What is the velocity of the ball after the impact?
10 m s-1
12 m s-1
15 m s-1
18 m s-1
The following materials can reduce impulsive force.....
polystyrene packing
mattress for a high jump event
pestle and mortar
A hockey player uses a hockey stick to hit a hockey ball, causing the ball to travel with a velocity of 30 m s-1. If the mass of the hockey ball is 100 g and the time of impact between the hockey stick and the ball is 5 x 10-3 s, calculate the impulsive force exerted by the hockey ball.
600 N
-600 N
600 000 N
-600 000 N
impulse is
the change in momentum
the rate of change in momentum
the rate of force acting
the change in inertia
During a collision. an object experiences an impulse. How can this impulse be calculated?
Multiplying force by time
Multiplying mass by velocity
Dividing velocity by time
Multiplying mass by acceleration
A softball player moves his hand backwards while catching a fast-moving ball. This movement of hand is to
increase the impulsive force
control the ball to stop it falling
lengthen the stopping time of the ball
A boy kicks a stationary ball of mass 0.15 kg. The ball moves forward at a velocity of 60 ms-1 and the time of impact between the boy’s foot and the ball is 5 ms. What is the impulsive force?
1.8 N
9 N
180 N
1800 N
