After an average acceleration of 3.39 m/s2 during 2.29 s, a car reaches a final velocity of 16.1 m/s. find the car's initial velocity.

Aparticle travels in a circular orbit of radius 21 m. its speed is changing at a rate of 23.1 m/s2 at an instant when its speed is 37.2 m/s. what is the magnitude of the acceleration (in m/s? ) of the particle?

Give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.

Which of the following are molecules? a. al b. ag c. mgcl2 d. nacl e. c3h8