Can someone please help me find the answers and explain please (I will give points and thanks to whoever answers in the next 45 mins)

What is the single most important equation in all of physics?

What’s the kinetic energy of the object? use . erica is competing in the shot put event at a track meet. she hurls a shot with a mass of 4 kilograms at a speed of 9 meters/second. the shot’s kinetic energy is joules.

A10.0 kg crate is pushed with a horizontal force of 40 n. the crate moves at a constant velocity of 3.0 m/s. what is the value of the friction force on the crate? 10 n 100 n 40 n 70 n