A student conducts and investigation to determine a ball’s mass, displacement, velocity and acceleration. (A) Identify each of the following as wither a vector or scalar quantity: Mass, Displacement, Velocity & Acceleration. (B) Describe how vector quantities are different from scalar quantities. (C)The ball starts from rest and is set in motion of 5 m/s. it rolls for 5 seconds before crossing the finish line. What is the acceleration?

acceleration = 1 m/s²

Explanation:

A) Mass = Scalar, Displacement = Vector quantity, Velocity = Vector quantity, Acceleration = Velocity

B) Vector quantities are quantities that have both magnitude and direction while scalar quantities are quantities that have only magnitude and but no direction.

c) From the first equation of motion, v = u + at

since the object starts from rest, u = 0 m/s

time, t = 5 seconds

5 = 0 + 5a

a = 5/5

a = 1 m/s²

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.