How much force is needed to accelerate a 90kg skier 2m/s2?
180 N
To calculate the force needed to accelerate a skier, we can use Newton's second law of motion, which states that force (F) equals mass (m) multiplied by acceleration (a).
Given:
Mass of the skier (m) = 90 kg
Acceleration (a) = 2 m/s^2
We can substitute these values into the equation to calculate the force:
F = m x a
F = 90 kg x 2 m/s^2
F = 180 kg·m/s^2
So, the force needed to accelerate the 90 kg skier at a rate of 2 m/s^2 is 180 N (newtons).