Forces can change of the object’s motion. true or false
true
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Place the baseball on a table and if you push it a little bit, it will roll forward quickly. True or False
False
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If we push the ball harder, we are applying less force. True or False
False
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The ball is rolling. If we place the cover of notebook at a slight angle in the path of rolling ball,the ball’s direction will not change. True or False
False
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Our baseball that is on the table is now rolling . If we place our hand infront of it the ball will stop. True or False
True
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We can say that the force can set a stationary object into motion. True or False
True
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How is an object’s motion change?
A force is applied to it.
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In what ways can motion be changed by a force?
Motion can change in speed or direction.
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When have you experienced unbalanced forces?
Playing See-saw
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What is friction?
A force that occurs when one object rub against another.
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How is friction helpful?
It helps breaks stop a bike, it helps shoes push off the floor to walk.
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What types of surfaces typically have least friction between them?
Smooth or slippery surface
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Explain a time that you experienced little friction.
Sliding
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How can you increase friction?
Rough or sticky materials to increase friction.
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What action could cause an object to move forward?