Aball is projected vertically upwards from the top of a tower 60m high with a velocity of 30m/s .maximum hight above the ground level? how long does it take to reach the ground?

A-of 75 cm by cm by 17.5 cm up. of is 2 kg a , in ,if it is in , kg/?

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?