Momentum, Newtons laws, weight

Momentum, Newtons laws, weight

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Multiple Choice

Unit of weight

• Kg

• Newtons

• m/s

• kg x m/s

How to find weight

• weight = mass X acceleration due to gravity

• acceleration on Earth is 9.8 m/s²

• Newtons(N)= unit

Fill in the Blank

What is the weight of a man that has a mass of 75 kg on Earth?

What is the weight of a man that has a mass of 75 kg on Earth?

• w=m X a

• w=75 kg X 9.8 m/s²

• 735 N

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What is the weight of a box on the moon that has a mass of 100 kg? "On the Moon, the free-fall acceleration is 1.6 m/s²."

What is the weight of a box on the moon that has a mass of 100 kg? "On the Moon, the free-fall acceleration is 1.6 m/s²."

• w= m X a

• w= 100 kg X 1.6 m/s²

• 160 N

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What is the Mass of an object that weighs 15,000 Newtons? round to 10's place

What is the Mass of an object that weighs 15,000 Newtons? round to the nearest whole number

• w =m X a

• m= w/a

• m=15,000 N / 9.8 m/s²

• 1531 kg

Multiple Choice

Unit of momentum

• Newtons

• kg x m/s

• m/s

• kg

momentum = mass X velocity

• p= m (v)

• kg x m/s (unit)

Fill in the Blank

What is the momentum of a 25 kg ball rolling at 3 m/s?

What is the momentum of a 25 kg ball rolling at 3 m/s?

• momentum= mass X velocity

• p= 25 kg X 3 m/s

• mass= 75 kg X m/s

Fill in the Blank

What is the momentum of a 2500 kg car traveling at 10 m/s?

What is the momentum of a 2500 kg car traveling at 10 m/s?

• p= m x v

• p= 2500 kg x 10 m/s

• 25,000 kg x m/s

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What is the mass of a car traveling at 15 m/s with a momentum of 1500 kg x m/s

What is the mass of a car traveling at 15 m/s with a momentum of 1500 kg x m/s

• p=m x v

• m= p/ v

• m= 1500 kg/ 15

• 150 kg

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Find the velocity of a 600 kg vehicle traveling with a momentum of 30,000 kg x m/s

Find the velocity of a 600 kg vehicle traveling with a momentum of 30,000 kg x m/s

• p= m x v

• v=p/m

• v=30,000 kg x m/s / 600 kg

• 50 m/s

Force =mass X acceleration

• F=ma

• 
  

• 
  

• 
  

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Find the force needed to push a 20 kg box at 5 m/s.

Find the force needed to push a 20 kg box at 5 m/s.

• F=ma

• F= 20 kg x 5 m/s

• F = 100 N

Fill in the Blank

What is the acceleration of a 125 kg object pushed with a force of 500 Newtons?

What is the acceleration of a 125 kg object pushed with a force of 500 Newtons?

• F=ma

• a=F/m

• a=500 N/ 125 kg

• 4 m/s²

Multiple Choice

Refers to an object resisting change in velocity.

• inertia

• weight

• mass

• momentum

Multiple Choice

A ball bouncing off the floor is an example of which of Newtons Laws?

• 1st

• 2nd

• 3rd

3rd law: for every action there is an equal and opposite reaction

Multiple Choice

Which law? A ping pong ball will accelerate faster than a golf ball if the same force is applied to it.

• 1st law

• 2nd law

• 3rd law

Multiple Choice

Law of inertia

• 1st law

• 2nd law

• 3rd law