for a group class project students are building mode roller coasters each roller coaster needs to begin at the top of the first hill where a horizontal spring that is initially compressed .25 m will push a small car forward

What mass will a pumpkin have a force of 450 newton’s accelerates it to 110 m/s^2? include the correct units.

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?

Distinguish between linear momentum and angular momentum