The big bang produced an imprint of leftover heat called

Consider a train moving at a constant velocity of 30 m/s. If the engines provide 4000 N of thrust, what is the frictional force acting on the train?

The next three questions, Questions 2 - 4, relate to a cannon ball and a marble that are dropped from the same height at the same time. Both are originally at rest. Ignore air friction.

How can cars be made to be more fuel efficient?

When a driver presses the brake pedal his car stops with an acceleration - 2.1 m/s2. How far will the car travel while coming to a complete stop if it's initial speed was 10 m/s?

What is the acceleration of a 32-kg object if a 6.75-N force is applied to it? a. 0.21 m/s2 b. 4.74 m/s2 c. 21.09 m/s2 d. 216.00 m/s2

How can the same material bend in one situation but break in another

According to Newton's first law of motion, what would happen to a car traveling at a constant velocity of 55 MPH to the west in the absence of an unbalanced force?

The Appalachian mountain range in the Eastern United States was once much taller than the Rocky mountain range in the Western United States.

Describe how lighting is just like you walking across a carpet and getting shocked

You need to raise a heavy block by pulling it with a massless rope. You can either (a) pull the block straight up height h, or (b) pull it up a long, frictionless plane inclined at a 15∘ angle until its height has increased by h.