An asteroid that is 1200 kg is going towards earth at 300m/s. In a window of 0.75 seconds we want to slow it to 50m/s by sending a rubber ball at it. How much force does the rubber ball need to slow the asteroid down?

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant

The amount of potential energy possessed by an elevated object is equal to what?

Acentrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. when switched off, it rotates through 54.0 revolutions before coming to rest. find the constant angular acceleration (in rad/s2) of the centrifuge. your response is within 10% of the correct value. this may be due to roundoff error, or you could have a mistake in your calculation. carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s2