An object of mass 20 kg is travelling at a constant speed of 6.0ms! It collides with an object of mass 12 kg travelling at a constant speed of 15 ms in the opposite
direction. The objects stick together.
What is the speed of the objects immediately after the collision?
А 1.9 ms -1
B 9.0 ms -1
C 9.4 ms
D 21ms-1

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

What is the measurement of how fast an object moves relative to a reference point?

Against his financial advisor's advice, frank has decided to invest his money in some risky stocks because he once made quite a bit of money in the stock market. his decision illustrates a. the representativeness heuristic b. overconfidence c. the availability heuristic d. confirmation bias select the best answer from the choices provided