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WorksheetsPhysics Form 4_Chap 2.7 Impulse & Impulsive Force
Total questions: 17
Worksheet time: 11mins
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 can be determined by calculating the area under graph of
force (f) - time (t) graph
impulse (J) - time (t) graph
momentum (p) - time( t) graph
velocity (v) - time (t) graph
impulsive force is
the change in velocity
the rate of change in momentum
the change in acceleration
the rate of change in inertia
impulse is
the change in momentum
the rate of change in momentum
the rate of force acting
the change in inertia
a boy bending his knees when jumping down from a fence. the boy bends his knee so that the impact of the impulsive force on his leg will be
bigger
smaller
the same
which of the following will reduce impulsive force
increase in velocity
increase in mass
increase in time
increase in acceleration
which of the following causes increase in impulsive force?
a long jumper landing on a sandy pit
an airbag acting on a driver during an accident
a softball player wearing a thick and soft glove to catch a ball
a boy jumping down with straightened legs.
The units for Impulse are...
N/s
Nkgs
Ns
Kgs
Momentum is the product of velocity and...
Weight
Gravitational force
Mass
Time
