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Laabri

11/16 - Review: Forces (Due Friday)

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Last updated almost 4 years ago
23 Nsɛmmisa
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1.

A force is a or a .

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2.

The sum of all the forces acting on an object is known as the force.

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3.

1. If the forces acting on an object at rest are , the object will remain at rest.

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4.

When traveling at the same speed, a bowling ball is harder to stop than a soccer ball because the bowling ball has greater

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5.

is the tendency of an object to resist any change in its motion.

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6.

Newton's first law of motion states that an object stays in constant motion unless an force acts on it.

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7.

Friction always acts in a direction that is to the direction of motion

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8.

According to Newton's second law of motion, a larger net force acting on an object will cause a greater of that object

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9.

If you triple the net force on an object, the acceleration will

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10.

A rocket launching is an example of Newton's law

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11.

Acceleration toward the center of a curved path is called acceleration

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12.

The acceleration of an object depends on two things: the size of the acting on it as well as the of the object.

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13.

According to Newton’s second law, F =

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14.

If the net force on a moving object is , it will continue to move in a straight line with a constant speed.

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15.

You push on a crate with a force of 10 N to the right, and your friend pushes on the crate with a force of 25 N to the left. Describe and explain the motion of the crate.

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16.

You push a heavy box. At first it doesn't move. You push harder, and it finally starts to move, but you still have to exert a constant force to keep it moving across the room. Explain why.

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17.

Can an object still be in motion if the net force acting on it is zero? Explain.

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18.

An object at rest will remain at rest and an object in motion will stay in motion unless acted upon by an unbalanced force.

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19.

An object’s acceleration depends on its mass and the net force acting on it. (F = ma)

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20.

When one object applies a force on a second object, the second object applies a force on the first object that is equal and opposite.

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21.

Using one or more of Newton’s laws, explain why you fall forward when you trip on a crack.

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22.

Using Newton’s third law of motion, explain how you are able to walk forward.

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23.

Using one or more of Newton’s laws, explain why it is necessary to wear a seat belt to hold you in place if your car that stops suddenly?