A student pushes a golf ball down a frictionless hallway until the ball reached a speed of 2.5 meter per second. Which statement best describes the inertia of
the golf ball when the student stopped pushing the ball?
The ball accelerated
The ball continued to move in the same direction
The ball changed its speed
The ball changed direction and decelerated​

Estimate the kinetic energy of mars with respect to the sun as the sum of two terms, that due to its daily rotation about its axis, and that due to its yearly revolution about the sun. (assume mars is a uniform sphere with mass = 6.4×10 to the power of 23 kg, radius = 3.4×10 to the power of 6 m, rotation period = 24.7 hours, orbital period = 686 days and is 2.3×10 to the power of 8 km from the sun.)