Momentum Quiz

The definition of momentum is

• Mass in Motion
• The size of an object
• The velocity of an object
• A comparison between two objects

The momentum of an object depends upon the object's ___________&_____________.  

• size and shape
• mass and speed
• mass and veloctiy
• mass and energy

What is the unit for momentum?

• m/sec
• kg/sec
• kg/m
• kg m/sec

Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?

• car
• bike
• they are equal
• cannot determine using the info provided

Tags

CCSS.7.RP.A.3

A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball. 

• 55 kg*m/s
• 100 kg*m/s
• 250 kg*m/s
• 500 kg*m/s

What object will have more momentum a 1000 kg truck moving 7 m/s or a 500 kg car moving 10 m/s

• Truck

• Car

• They will have the same momentum.

• There is not enough information to answer this question.

A runner has a momentum of 720 kg m/s and is traveling at a velocity of 5 m/s. What is his mass?

• 14.4 kg
• 1400 kg
• 144 kg
• 360 kg

Tags

CCSS.7.RP.A.3

Eggs are thrown at a wall and at a bed sheet. The force of impact will be

• greater against the wall.

• greater against the sheet.

• The forces are equal.

Wearing a safety helmet is an effective way to protect your head from injury. In order for the force to ___________ on impact, the time to bring your head to a stop must ____________. This is done through adding padding in the helmet.

• decrease; increase

• increase; decrease

• increase; increase

• decrease; decrease

Most modern vehicles have padded dashboards. This reduces collision injuries by...

• reducing the driver's change in momentum
• increasing the driver's change in momentum
• increasing the force of impact
• increasing the time of impact