A freely falling object has a speed of 40 m>s at one instant. Exactly 1 s later its speed will be (a) the same. (b) 10 m>s. (c) 45 m>s. (d) greater than 45 m>s. If an object moves along a curved path,...

A freely falling object has a speed of 40 m>s at one instant. Exactly 1 s later its speed will be

(a) the same.

(b) 10 m>s.

(c) 45 m>s.

(d) greater than 45 m>s.

If an object moves along a curved path, then it must be

(a) accelerating.

(b) acted on by a force.

(c) both of these

(d) none of these