Answer:
1800 N
Explanation:
There are two ways you can solve this. Newton's second law, or impulse.
Using Newton's second law:
F = ma
F = m Δv / Δt
F = (78 kg) (0 m/s − 32 m/s) / (1.4 s)
F ≈ -1800 N
Impulse = change in momentum
F Δt = m Δv
F (1.4 s) = (78 kg) (0 m/s − 32 m/s)
F ≈ -1800 N
The magnitude of the force (rounded to two significant figures) is 1800 N.
