Daniel steps on the gas pedal of his car, and the engine increases its performance from zero to 2700 rpms (rotations per minute). What are the frequency and period?
(Hint: frequency is cycles per second.]

Answer

The frequency and the period are 45 cycles/second and 0.023 seconds

Explanation:

The frequency of the engine is given by :

We have, the engine increases its performance from zero to 2700 rpms.

Frequency,

The time period of the engine is given by :

T = f/f

So,

Hence, the required frequency and the period are 45 cycles/second and 0.023 seconds respectively.

increase masses, decrease separation

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.