An object moves in a circle at constant speed. Its tangential acceleration

a. points in the direction of the object's velocity at each instant in time.
b. points in the direction opposite the object's velocity at each instant in time.
c. is always zero.
d. points towards the center of the circle at each instant in time.

3. on your graph, the data points between the black squares are data for elements with atomic numbers 3 through 9. locate these elements on your periodic table. what term or description would you use to identify these elements with respect to the periodic table?

Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s.a. determine jay’s mass.b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)

A51 kg woman skis down a hill and her kinetic energy is 9.96e4 j. what is her speed?