A car traveling with a velocity of 23 m/s is accelerated uniformly at 1.8 m/s2 for 6.8 s.

What is its final velocity ? Answer in units of m/s .

What is the function of the commutator in a dc motor? a. to spin the magnet b. to change direct current into alternating current c. to change alternating current into direct current d. to spin the wire coil

Aboxcar traveling at 12 m/s approaches a string of 5 identical boxcars sitting stationary on the track. the moving boxcar collides and links with the stationary cars and they all move off together along the track. what is the final speed of the cars immediately after the collision? (you may take the mass of each boxcar to be 18,537 kg.)

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter