Question

Calculate the momentum of a 1,500 kg car traveling at 6 m/s.

Answer 1

1. P = mv

P = (1,500 kg) × (6 m/s)

P = 9,000 kg-m/s

2.

Step 1: Solve for the initial momentum of the plane.

P = mv

P = (7,800 kg) × (30 m/s)

P = 234,000 kg-m/s (momentum)

Step 2: Determine the new, total mass of the plane after refueling.

7,800 kg + 800 kg (fuel) = 8,600 kg total

Step 3: Using the plane's initial momentum and new mass, determine the new velocity.

P = mv

234,000 kg-m/s = (8,600 kg) × (v)

27.2 m/s = v

This makes sense, as you would expect the plane to slow down from taking on more mass from the fuel. The plane would then have to accelerate back to its original speed.

PF

Answer 2

Answer: 9000 kgm/s

Step-by-step explanation:

Mass of car = 1500 kg

Speed by which car moves = 6 m/s. Momentum of the car = ?

Recall that:

Linear momentum = Mass x Speed

= 1500kg x 6m/s

= 9000 kgm/s

Thus, the linear momentum of the car is 9000 kgm/s