The speed of a bullet can be measured by firing it at a wooden cart initially at rest and measuring the speed of the cart with the bullet embedded in it. Figure P4.80 shows a \(12-\mathrm{g}\) bullet fired at a \(4.0-\mathrm{kg}\) cart. After the collision, the cart rolls at \(1.8 \mathrm{~m} / \mathrm{s}\). What is the bullet's speed before it strikes the cart?

Data from Figure P4.80

Transcribed Image Text:

12 g 4.0 kg 1.8 m/s