WW # 1

A 10 kg boy is jogging on the street and moves with the velocity of 3 m/s going to south. How much is the momentum of the boy?

• 3 kg.m/s

• 10 kg.m/s

• 13 kg.m/s

• 30 kg.m/s

If the momentum of an object is 1 kg-m/s and its velocity is 0.5 m/s upward, what is its mass?

• 0.5 kg

• 1 kg

• 1.5 kg

• 2 kg

The grade 9 Jose Rizal students trying to finish the race carrying a 20 kg sacks of sand and their momentum is 30 kg-m/s. How fast are they?

• 1.5 m/s

• 2.5 m/s

• 3.5 m/s

• 4.5 m/s

Tags

NGSS.MS-PS3-1

The bus travels with the force of 15 Newtons in 10 seconds . What is the impulse?

• 60 N-s

• 70 N-s

• 80 N-s

• 150 N-s

Tags

NGSS.MS-PS2-2

Which of the following is the unit of Impulse?

• Kg-m/s

• kg-s

• N-s

• N-m/s

What are the two factors that affect the momentum?

• Time and energy

• Time and velocity

• mass and energy

• mass and velocity

Tags

NGSS.HS-PS2-2

Which of the following units can be used for the mass?

• second

• m/s

• Newton

• Kilogram

What is the unit of velocity?

• kilogram

• m/s

• Newton

• second

Tags

NGSS.MS-PS3-1

An egg was thrown to the wall and to the bedsheet at the same speed and force. Why is it that the egg has more damaged when you hit the wall than in the bed sheet?

• because the egg experienced more impact on the wall than in the bed sheet.

• because the bed sheet is softer than the wall

• because the wall is solid and compacted.

• because the bed sheet absorbed the egg and the egg stayed on it.

Tags

NGSS.MS-PS2-2

How does the velocity affect the momentum of an object?

• as the velocity increases, the momentum decreases

• as the velocity increases, the momentum increases

• as the velocity increases, the momentum remains the same

• it is possible to decrease, increase and remains the same as the velocity increases.

Tags

NGSS.HS-PS2-2