A car starts from rest and accelerate at a constant rate. After the car has gone 50m it has a speed of 21 m/s. What is the acceleration of the car?

Briefly describe the two different categories of mechanics:

Prove the surface area of a portion of the sphere of radius r between two horizontal planes

Which describes Newton's law of universal gravitation? Gravitational force is directly proportional to the distance between objects. All objects repel all other objects. Gravitational force increases with distance.

Which of the following statements is true in the case of a collision? OA. Increased impact time will increase the impact force. OB. Reduced impact velocity will increase the impact force. Ос. Reduced impact mass will increase the impact force.

X (?) = 5.0? 2 - 4.0? 3 m. Find (a) the velocity and acceleration of the particle as functions of time, (b) the velocity and acceleration at t = 2.

A microwave oven operating at 120 volts is used to heat a sandwich if the oven draws 12.5 amperes of current for 45 seconds what is the power dissipated by the oven?

Which of the transformers are step-up transformers? Which of the transformers are step-down transformers?

1 A plane moving at 30m/s drops a load 200m down to the ground. How long did it take to hit the ground.

Can a body be in equilibrium if it is in motion? Explain

What is the average speed in kilometers per second of the earth around the sun?