Forces

What is a push?

• Lifting a heavy box

• Pulling a wagon

• Applying force to move an object away

• Catching a baseball

What does it mean to transfer energy?

• To create energy from nothing

• To destroy energy completely

• To move energy from one place to another

• To change the color of energy

Tags

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When I kick a ball I apply a​ (a)   to the ball. The ball wants to keep moving due to ​ (b)   , however ​ (c)   from the ground will eventually stop the ball.

• force

• inertia

• friction

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When you push a box across the floor to make it move you need to apply enough force to overcome the force of ​ (a)   between the box and the floor.

• friction

• gravity

• air resistance

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What unit is used to measure force ?

• Neutron

• Newton

• Nitron

• Watt

Answer explanation

The unit of Force is named after this man Sir Isac Newton who discovered gravity.

When you jump up in the air _____ pulls you back down.

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Which of the following is not a force ?

• gravity

• chemical

• friction

• air resistance

Answer explanation

Chemical energy is a type of energy not a force.

Which of the following is a type of force ?

• Electromagnetic

• light

• electrical

• heat

Tags

NGSS.MS-PS2-3

Reorder the following by the least to most amount of friction

• Ice

• dirt

• pavement

Answer explanation

When a skydive jumps from an airplane ​ ​ (a)   pulls them down. When they release their parachute they will fall slower due to ​ (b)   . The parachute encounters more ​ (c)   then the skydiver because it has more ​ (d)   .

• gravity

• air resistance

• surface area

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