Question

Sheila weighs 60 kg and is riding a bike. Her momentum on the bike is 340 kg • m/s. The bike hits a rock, which stops it completely and throws Sheila forward onto the pavement.
If there is no net force on the system, what is Sheila’s velocity immediately after she is thrown from the bike?

1.8 m/s
2.0 m/s
5.0 m/s
5.7 m/s

Answer 1

From the calculation, Sheila’s velocity immediately after she is thrown from the bike is 5.7 m/s.

What is momentum?

Momentum is the product of mass and velocity. We know that the momentum before collision is equal to the momentum after collision.

Hence;

Momentum before collision = 340 kg • m/s.

Momentum after collision = 60v

Thus;

340 kg • m/s = 60v  kg • m/s

v = 340 kg • m/s/60 Kg

v = 5.7 m/s

Learn more about momentum:brainly.com/question/24030570

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