Newton’s second law
Answers are for parents and teachers.
1
m = 6 kg, F = 18 N. a (m/s²)?
3
2
m = 1200 kg, a = 3 m/s². F (N)?
3600
3
F = 100 N, a = 20 m/s². m (kg)?
5
4
Two children push the same cart, one harder. Who gives the greater acceleration, and why?
The harder pusher: mass is constant, larger F gives larger a.
5
Why is braking hard at high speed on a bike dangerous?
A large deceleration arises and the rider can be thrown forward by inertia.