A friend says that earths continents are too large and massive to move. Explain to your friend why continents move.

Get to me as soon as you can!

Imagine a rock is dropped from the top of a tall building. After 2 seconds of falling, the rock's instantaneous speed is approximately 20m/s. does anyone know is it true or false

Which of the following is an example of Newton's first law of motion? Sam's bike hits a curb and he flies over the handlebars, onto the grass. A feather and a brick are dropped from a ladder. The brick exerts a greater force when it hits the ground.

A person travels distance πR along the circumference of a circle of radius R. Displacement of the person is a. R b. 2R c. 2πR d. zero WHY?

An athlete whose mass is 87.0 kg is performing weight-lifting exercises. Starting from the rest position, he lifts, with constant acceleration, a barbell that weighs 600 N. He lifts the barbell a distance of 0.65 m in a time of 1.3 s.

A wheel originally rotating at 126 rad/s undergo a constant angular deceleration of 5.00rad/s. What is the angular speed after it has turned through an angel of 628 radians?

How does wavelength and frequency affect the speed?

A cyclist turns a corner with a radius of 37 m at a speed of 22 m/s. What's the cyclist acceleration? If the cyclist and cycle have a combined mass of 90 kg, what is the force causing them to turn?

A gas had a initial volume of 168 cm at a temperature of 255 k and a pressure of 1.6 atm the pressure of the gas decreased to 1.3 atm and the temperature of the gas increases to 285 k

A train travels 90 kilometers in 1 hours, and then 60 kilometers in 3 hours. What is its average speed

A man is shot out of a cannon towards the center of an 80 foot long catching net 200 feet away. Unfortunately, the person in charge of aiming the cannon did not consider the crosswind.