If three boys are pushing on a 20 kg cart, each with 15 newtons of force, and a horse is pulling the cart in the opposite direction with 45 newtons of force, what is the acceleration of the cart?

An experiment is designed to test the relationship between the initial height of a basketball before it is dropped to the height of its rebound bounce. the height of the rebound bounce is measured using a scale positioned behind the ball. in the above experiment, which condition would not be controlled? a). the starting height of the ballb). the surface the ball bounces on c). the type of ball d). the method to measure the rebound height of the ball

What are the applications of electromagnetic waves

Aball of mass 0.3kg is released from rest at a height of 8m.how fast is it going when it hits the ground? accleration due to gravity is g=9.8m/s