Question

A grocery shopper tosses a(n) 9.1 kg bag of
rice into a stationary 19.3 kg grocery cart.
The bag hits the cart with a horizontal speed
of 6.6 m/s toward the front of the cart.
What is the final speed of the cart and bag?
Answer in units of m/s.

Answer 1

Answer:

2.1 m/s

Explanation:

Momentum is conserved, so:

m₁ u₁ + m₂ u₂ = (m₁ + m₂) v

(9.1 kg) (6.6 m/s) = (9.1 kg + 19.3 kg) v

v = 2.1 m/s