# Please give me a suggestion

I am having problesm with this question

a. A 2.5-g bullet traveling at hits a tree and slows uniformly to a stop while penetrating a distance of 12 cm into the tree’s trunk. What force was exerted on the bullet in bringing it to rest?

b You are carrying a backpack across campus. What is the work done by your vertical carrying force on the backpack? Explain.

Thanks anyone

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a. A 2.5-g bullet traveling at hits a tree and slows [...]
travelling at what?

A 2.5-g bullet traveling at 350m/s hits a tree and slows uniformly to a stop while penetrating a distance of 12 cm into the tree’s trunk. What force was exerted on the bullet in bringing it to rest?

No worries, well you know initial velocity, final velocity and displacement. Use a constant acceleration formula to solve for acceleration. You can work out force from that [F = ma].

For question two, have a think about it for a little. What is the vertical force (doing work) to keep up the backpack.

HallsofIvy
Homework Helper
I am having problesm with this question

a. A 2.5-g bullet traveling at hits a tree and slows uniformly to a stop while penetrating a distance of 12 cm into the tree’s trunk. What force was exerted on the bullet in bringing it to rest?

Thanks anyone
A 2.5-g bullet traveling at 350m/s hits a tree and slows uniformly to a stop while penetrating a distance of 12 cm into the tree’s trunk. What force was exerted on the bullet in bringing it to rest?