The idea of field was needed for which reason? a. There was no way to calculate forces

b. Forces were exerted without physical contact

C. There was no way to know the direction of forces

D. Forces affect only certain things

An object has a weight of 500 on earth what is the mass of this object

For this car, predict the shape of a graph that shows distance (x) versus time (t). note that time is the independent variable and will be on the bottom axis. need asap

Aturntable that spins at a constant 74.0 rpm takes 3.10 s to reach this angular speed after it is turned on. find its angular acceleration (in rad/s2), assuming it to be constant, and the number of degrees it turns through while speeding up.