A 2kg object is moving horizontally with a speed of 4 m/s. how much force is required to keep the object moving at this speed and in this direction? explain.

Which of the following transfers heat in the form of a wave? a. conduction b. radiation c. convection d. nuclear fission

How do most black holes form?

A car travelling at 40 m/s comes to a halt in 8 seconds. What is the car's acceleration and how far does it travel while it is stopping?

An object has a mass of 250 g. What is the gravitational force of the object by the earth

How many seconds does it take a pebble released from rest off a bridge to fall 29.4 m? What is the pebble's speed when it has fallen 29.4 m?

During a free fall Swati was accelerating at - 9.8m/s2. After 120 seconds how far did she travel? Use the formula = 1/2 * t2 to solve your answer. (Do not forget to keep units in your answer.)

How do sinkholes form?

What is the result of wave motion on water particles? A.) Water particles are pushed forward as they move up and down. B.) Water particles barely move forward as they move up and down. C.) Water particles are pushed down as they move side to side. D.

Nitric acid (HNO3) and potassium hydroxide (KOH) combine in a neutralization reaction to form water and a salt. Which of the following correctly identifies the salt that is produced? OHK NOK2 KNO3 HOH

When the speed of something is the same what is that called