Help please! this is physics !

When an object moves in uniform circular motion, the direction of its acceleration is a) in the same direction as its velocity vector. b) in the opposite direction of its velocity vector c) is directed toward the center of its circular path. d) is directed away from the center of its circular path. e) depends on the speed of the object.

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

Which branches of natural science include the study of an organism that lived 10 million years ago