General Physics I Exam 4 Review Flashcards

Flashcards based on General Physics I exam review notes.

Angular displacement is usually expressed in units of

Radians.

What is the SI unit of momentum?

N-S (Newton-seconds)

Angular velocity is expressed in units of

Radians per second.

Angular acceleration is expressed in units of

Radians per second squared.

What happens to the velocity of a freight car when a load of coal is dumped into it?

It decreases.

What arc length does the Earth travel in a three month period?

2.4 × 10¹¹ m

How would you represent kinetic energy in terms of momentum (p) and mass (m)?

p²/(2m)

What distance does the tip of a second hand sweep through in 3 minutes and 45 seconds?

7.1 m

What is the linear speed of a point 0.10 m from the center of a bicycle wheel rotating uniformly?

0.31 m/s

What will a light beach ball's speed be approximately after colliding with a heavy exercise ball at rest?

0

What is the centripetal acceleration of a point on the perimeter of a bicycle wheel?

183 m/s²

What is the magnitude of the momentum of a 1200-kg ferryboat moving south at 20 m/s?

2.4 × 10⁴ kg-m/s

What is the centripetal acceleration of a car negotiating a flat circular curve?

8.0 m/s²

What is the magnitude of the force required to tighten bolts on a car wheel?

380 N

What is the change in momentum of a tennis ball struck by a racket?

1.8 kg·m/s

What angular acceleration does a wheel experience with a net torque applied?

1.17 rad/s²

What is the magnitude of the average force the bat exerted on the ball?

800 N

What is the angular acceleration as a rod is released?

3.68 rad/s²