The position of an object moving along the x-axis is given by x = (5.0 m/s)t – (10.0 m/s2 )t 2 + (4.0 m/s3 )t 3 What is the object doing at t = 1.0 s?

Ababy stroller is a rest on top of a hill which is 10 m high. the stroller and baby have a mass of 20 kg. what is the potential energy of the baby and stroller?

The horizontal blue line through the middle of the lens is called the optical axis. as the lamp is moved above or below the axis, keeping the horizontal distance to the center of the lens constant, how does the horizontal distance from the lens to the image change?

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?