Please help me answer this A 0.25 kg arrow going 45 m/s is shot into a 5.0 kg target . The target is on wheels , find how fast it will roll backwards. ​

How much force must a locomotive exert on a 12840-kg boxcar to make it accelerate forward at 0.490 m/s2?

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?