The velocity of an object increases from –10 m/s to –15 m/s in 2.0 s. what is the average acceleration of the object? +2.5 m/s2 –12.5 m/s2 –2.5 m/s2 +12.5 m/s2

What is the speed vfinal of the electron when it is 10.0 cm from charge 1?

Which statement is true about an object that is moving in a circular motion due to centripetal force, f, when the radius of its circular motion is doubled? the new force then becomes equal to 2f the new force then becomes equal to f the new force then becomes equal to f/2 the new force then becomes equal to f2 the new force then becomes equal to 1/f

Idon’t know the answer to it and am stuck.