# HELPPPPP

posted by .

so im done with everything except fro this question : A(n) 2.3 kg object moving with a speed of 8.6 m/s collides with a(n) 4 kg object moving with a velocity of 8.8 m/s in a direction39.0135◦ from the initial direction of motion mof the 2.3 kg object.What is the speed of the two objects afterthe collision if they remain stuck together?

• HELPPPPP -

Find initial momentum for the smaller object, via p1 = mv. Think of this momentum as being in the x-direction. Now break up the other objects momentum into its x and y components, p2x = mvcos(theta) and p2y = mvsin(theta). Final momentum in x-direction = p1+p2x and final momentum in y-direction = p2y. Use these components to find the momentum in the actual direction of the motion. Divide this momentum by the combined mass of the objects in order to find v. In order to find the change in direction, take the inverse tan of (p2y)/(p1+p2x). This is for the AP Physics students of decades to come.

## Similar Questions

1. ### Physics

A 26.0 g object moving to the right at 17.0 cm/s overtakes and collides elastically with a 10.0 g object moving in the same direction at 15.0 cm/s. Find the velocity of each object after the collision. a) 26.0 g object b) 10.0 g object
2. ### AP Physics

A 3kg object initially moving in the positive x-direction with a velocity of +5m/s collides with and sticks to a 2kg object initially moving in the negative y-direction with a velocity of -3m/s. Find the final components of velocity …
3. ### physics

a 4 kg object moving with a speed of 7.8 m/s collides with a 16 kg object moving with a velocity of 7.6 m/s in a direction of 22 degrees from the initial direction of motion the 4 kg object. what is the speed of the two objects after …
4. ### physics

a(n) 6kg object moving with a speed of 8.3 m/s collides with a(n) 18kg object moving with a velocity of 10 m/s in a direction 23(degrees) from the initial direction of motion of the 6kg object. What is the speed of the two objects …
5. ### Science

a 25 kg object moving at 15 m/s collides with at 15 kg object that is standing still. They stick together and keep moving, what is their final velocity?
6. ### Physics

An 67.6 kg object moving to the right at 38.7 cm/s overtakes and collides elastically with a second 48.9 kg object moving in the same direction at 19.2 cm/s. Find the velocity of the second object after the collision. Answer in units …
7. ### Physics

An 67.6 kg object moving to the right at 38.7 cm/s overtakes and collides elastically with a second 48.9 kg object moving in the same direction at 19.2 cm/s. Find the velocity of the second object after the collision. Answer in units …
8. ### Physics

A 2.87 kg object initially moving in the positive x-direction with a velocity of +4.87 m/s collides with and sticks to a 1.96 kg object initially moving in the negative y-direction with a velocity of -2.55 m/s. Find the final components …
9. ### physics

Question: Object A is moving at a maximum speed of 6m/s towards Object B. At 50 m away Object B accelerates from the approaching Object A at 0.3m/s^2. Does Object A catch up to Object B and if yes when?
10. ### physics

A 5 kg object moving with a speed of 6.6 m/s collides with an 18 kg object moving with a velocity of 8.4 m/s in a direction 19 degrees from the initial direction of the motion of the 5 kg object. What is the speed of the two objects …

More Similar Questions