A horizontal force of 5 n accelerates a 4-kg object from rest at 0. 5 m/s2. What friction force acts on the object?.

Acricket ball of 70g moving with a velocity of 0.5 m/s is stopped by a player in 0.5s what is the force applied to stop the ball

Positrons are spontaneously emitted from the nuclei of

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter