Acceleration and net force

As an object falls freely near the surface of the Earth, its velocity:
a:decreases b:increases
c :remains the same

A car starts from rest at 4.0 m/s2 . The car will reach a speed of 28 m/s at the end of:
a:3.5 s b:7.0 s
c:14 s d:24 s

A car moving at a speed of 8.0 meters per second enters a highway and accelerates at 3.0 meters per second2. How fast will the car be moving after it has accelerated for 56 meters?
a:24 m/s b:20 m/s
c:18 m/s d:4 m/s

A toy projectile is fired from the ground vertically upward with an initial velocity of +29 meters per second. The projectile arrives at its maximum altitude in 3.0 seconds. As the projectile rises and then falls back to the ground, its acceleration
a:decreases, then increases
b:increases, then decreases
c:increase only d:remains the same

An object, initially at rest, falls freely near the Earth's surface. How long does it take the object to attain a speed of 98 meters per second?
a:.1 s b:10 s
c:98 s d:980 s

Which is a scalar quantity?
a:displacement
b:velocity
c:acceleration
d:mass

The force the counteracts on gravity is called

In a vacuum, if an elephant and a feather fall from a high tree, which one will encounter the greater force of air resistance while falling to the ground?

Which results in acceleration of an object, balanced or unbalanced forces?

When an object is in equilibrium, the net force is