# Calculating the energy of moving objects (Ek=1/2mv2)

## Quiz by Oak National Academy: GCSE Combined Science AQA Higher

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6 questions
• Q1
Which properties of an object can be increased so it has more energy in its kinetic store?
Sorting
30s
• Q2
Why does a shopping trolley that has been pushed and then let go of come to a stop?
Energy is transferred to the surroundings.
A gravitational force pushes down on it.
It runs out of energy.
30s
• Q3
What happens to the amount of work done moving a car, if the car is pushed with the same size force for three times the distance?
Three times the work.
The same amount of work.
One third of the work.
Nine times the work.
30s
• Q4
In which of these situations does the applied force not do any work?
Pushing a trolley forward to speed it up.
Pushing down on a trolley as it moves forwards.
Pushing on a trolley backwards to slow it down.
Pushing a trolley forward against friction, to keep it at the same speed.
30s
• Q5
How would you calculate the work done by a catapult in shooting a small ball forward?
Work done = force of catapult ÷ distance over which the ball moves
Work done = force of catapult × distance over which it pushes on the ball
Work done = force of catapult × mass of the ball
Work done = force of catapult ÷ mass of the ball
30s
• Q6
A catapult does work on a small ball to fire it vertically up into the air. What is the amount of work done on the ball equal to?
Energy in the gravitational store at its highest point.
The energy in the gravitational store when the ball leaves the catapult.
Energy in the kinetic store as the ball leaves the catapult.
Energy in the kinetic store at its highest point.
30s

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