Grade 8 – Science Summative Test SET E

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There is two experiments. A metal ball which has a weight of 5 kg and a plastic ball which has a weight of 1 kg. Which ball will accelerate faster when we apply force to them?

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The greater the force, the greater the ________ on an object that the force is being applied to.

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If we push a crate with force and another time we push it twice as hard, it will have move ________ than the first.

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The _______  always changes at a consistent rate over time if the net acting on an random object is consistent.

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A velocity that always changes at a consistent rate over time is considered to be moving with consistent __________.

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If the net force is doubled, the acceleration is also _______.

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If it is at constant mass, the acceleration of an object is _____________ to the magnitude of the unbalanced force.

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When the force is kept constant, if you doubled the mass of an object, the acceleration will be decreased to about _____.

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Law of interaction acts on two different bodies but law of acceleration acts on the _______ body.

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A rocket is able to push down on the ground with the ______ of its engines.

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A rocket exerts a downward force but the ________ force pushes it upwards.

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When an object exerts force to another object, the other object exerts a force of the same _______.

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When an object exerts force to another object, the other object exerts a force but in the opposite _______.

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Is there a reaction force when you lean on a wall?

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Is there a reaction force when you accelerate a car?