Hess's Law worksheets
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What force is needed to help stop a child from slipping on ice?
gravity
friction
magnetic
inertia
A push or a pull on an object is an example of
force
weight
energy
work
How does motor oil help to keep a car’s engine from getting too hot?
by decreasing friction
by increasing friction
by increasing mass
by decreasing gravity
A student is investigating the effect of force on several objects. If each ball is rolled with the same amount of force on the same surface, which ball will roll the farthest?
golf ball
tennis ball
soccer ball
basketball
The following trucks are pushed with the same amount of force. Which truck will roll the farthest?
the 10g truck
the 20g truck
the 30g truck
the 40g truck
Four solid balls, each with a different mass, are moving at the same speed. Which ball would require the most force to stop its motion?
ball with a mass of 5 kg
ball with a mass of 10 kg
ball with a mass of 15 kg
ball with a mass of 20 kg
Wind is acting on the sails of a boat as shown in the illustration below. The force of the wind is greater than the force of the water. Which will most likely happen to the boat if the wind increases?
the boat will speed up
the boat will slow down
the boat will stop moving
the boat will move at the same speed
How does the mass of an object affect acceleration?
The greater the mass of an object, the smaller the force needed to accelerate the object.
The greater the mass of an object, the greater the force needed to accelerate the object.
The mass of an object has no impact on the amount of force needed to accelerate it.
It is impossible to predict the impact of mass on the acceleration of an object.
Which will require the most force to move?
a 1-kg ball
a 10-kg ball
a 100-kg ball
a 1000-kg ball
A ball was rolling fast and then slowed. Which most likely caused the ball to slow?
friction
wind
heat
momentum
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