WTA Physics ~ 2

According to Newton's 2nd Law:

What is the mass of a truck that has 48000 kg m/s or momentum west and a velocity of 12 m/s west?

Every force is really a pair of forces, equal in ________ and _________ in direction.

What is the momentum of a 2000 kg car with a velocity of 6 m/s north?

A balloon pushes the the air in it outward and to the left. The air pushes the balloon:

When the momentum changes, the mass usually changes.

A boxing glove protects the hands because the glove increases the time it takes for the punch to land.

Velocity is like speed, but with a direction included.

Which of Newton's Laws best explains how a plane flies?

The direction of the momentum vector is always opposite the direction of the velocity vector.

What is the acceleration of a 50 kg box that experiences a net force of 100 N west ?

Newton's 3rd law states:

Impulse is:

Newton's 2nd Law states:

The magnitude of -20 N is 20 N.

Which shape means "change in" in physics?

What is the net force on a box that experiences a force of 10 N to the left and 10 N to the right?

A teacher pushes on a wall with 60 N of force. The wall pushes on the teacher with how many Newtons? Include direction.

What are the units of momentum?

Brakes act on a car. The net force on the 1200 kg car is 6000 N. What is its deceleration? Be careful with units!

You throw a baseball in deep space. After the throw, the ball:

If you want to decrease the force of an impact:

What is the symbol for momentum?

An egg with 6 kg m/s of momentum smashes into a wall & hits it with 60 N of force. The time of impact is:

Impulse is equal to:

Friction acts even without any motion.

To find the change in momentum, multiply the mass by:

What is the best way to decrease an impact force?

An thrown egg with 8 kg m/s of momentum hits a sheet and stops. The impact time is 2 s. What is the force on the egg?

What are the physics units for weight?

What is the impulse of a 8 N force that lasts for 2 s?