Answer: a = 4 m/s²
Explanation:
a = Δv/t = (30 - 18) / 3 = 4 m/s²
At the top of the height, the velocity is zero and acceleration is negative of acceleration due to gravity ( i.e 
).
The time of the ball in air is 3.2 s, so ascending time is 
.
Therefore from kinematic equation,
Substituting the values we get,
, Here v = 0 at top.
Now from equation,
, here h is the height .
So,
.
Thus, the ball reached at its maximum height of 12.48 m.
Answer:
The street applies a force of 20,000 N on the car.
Explanation:
Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction. The car applies the same amount of force to the street as the street to the car.
Answer:
Independent variable
Explanation:
The temperature of air inside the box depends on the time that the booxes sat on the window sill.
