<span>Answer: Force = 81.6 N
Explanation:
According to Newton's Second law:
F = ma --- (1)
Where F = Force = ?
m = Mass = 68 kg
a = Acceleration = 1.2 m/s^2
Plug in the values in (1):
(1) => F = 68 * 1.2
F = 81.6 N (The force needed to accelerate the skier at a rate of 1.2 m/s^2)</span>
The object does not move.
Speed = distance / time
S= 40 000m / 5400s
S= 7.41m/s
C) Radiation that comes from Earth...... Hope it helps, Have a nice day :)
