Physics

A perfectly (non-head on) elastic collision occurs between a 0.25kg object moving east at 4m/s and a stationary 0.3kg object. Following the collision the 0.25kg object is moving at 2m/s.

a) What is the speed of the 0.3kg object after the collision?
I did:
What formula do you use?

I used m1v1^2 = m1v1'^2 + m2v2'^2
and got 3.16m/s but I'm not sure if that's right.

b) You must select suitable directions of motion for the 2 objects after this collision, which is not head-on. Calculate the direction of motion for one of the 2 objects after the collision.

  1. 👍 0
  2. 👎 0
  3. 👁 285
  1. The conservation of energy applies, you did it correctly in a).

    For b), you have to use the result in a), and then set up a coordinate system E,N. The N components of both velocities have to add to zero, and the E components have to add to 4m/s. Use trig to get the components of each, assume some angle N of E, and S of E, theta1 and theta2. The algebra is a bit messy, but it works out.

    1. 👍 0
    2. 👎 0
    👨‍🏫
    bobpursley

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A 0.500 ice puck, moving east with a speed of 6.70 , has a head-on collision with a 0.700 puck initially at rest. Assuming a perfectly elastic collision, what will be the speed of the 0.500 object after the collision? What will be

  2. Physics

    An object of mass 80kg moving with velocity 2m/s hit by collideswith another object of mass 20kg moving with velocity 4m/s find loss if energy assuming a perfectly inelastic collision

  3. Physics

    Two objects, one of mass 3kg moving at 2m/s, the other of mass 5kg and speed of 2m/s move towards each other and collide in a head on collision. If the collision is perfectly inelastic, find the speed of the objects after the

  4. physics

    A 0.060 kg tennis ball, moving with a speed 2.50 m/s, collides head on with a 0.090kg ball initially moving away from it at a speed of 1.15 m/s. Assuming a perfectly elastic collision, what are the speed and direction of each ball

  1. Physics

    Two gliders on an air track collide in a perfectly elastic collision. Glider A has mass 1.1 kg and is initially travelling at a velocity of 2.7 m/s [E]. It collides head-on with glider B with mass 2.4 kg, travelling at a velocity

  2. Physics

    On a frictionless, horizontal air table, puck A (with mass 0.25kg) is moving toward puck B (with mass 0.35kg), which is initially at rest.After the collision,puck A has a velocity of 0.12m/s to the left, and puck B has a velocity

  3. science

    Object A has of mass 7.20 kilograms, and object B has a mass of 5.75 kilograms. The two objects move along a straight line toward each other with velocities +2.00 meters/second and -1.30 meters/second respectively. What is the

  4. Physics

    1.An elastic wire extend by 1.0cm when a load of 20g hangs from it.what additional load will be required to cause a further extension of 2.0cm? 2.A ball A of mass 0.4kg moving with velocity 5ms-1 collides head on with a ball B of

  1. General Physics

    A 0.500 kg sphere moving with a velocity (2.00i - 3.50j + 1.00k) m/s strikes another sphere of mass 1.50 kg moving with a velocity (-1.00i + 2.00j - 2.80k) m/s. (a) If the velocity of the 0.500 kg sphere after the collision is

  2. physics

    A 0.400-kg ice puck, moving east with a speed of 5.38 m/s , has a head-on collision with a 0.950-kg puck initially at rest. Assume that the collision is perfectly elastic. What is the speed of the 0.400-kg puck after the

  3. Physics

    A 5.00 g object moving to the right at +20.0 cm/s makes an elastic head-on collision with a 10.0 g object that is initially at rest. (a) Find the velocity of each object after the collision. 5.00 g object cm/s 10.0 g object cm/s

  4. PHYSICS HELP!

    An 88.5 kg fullback moving east with a speed of 5.5 m/s is tackled by a 94.0 kg opponent running west at 2.90 m/s, and the collision is perfectly inelastic. (a) Calculate the velocity of the players just after the tackle. m/s (b)

You can view more similar questions or ask a new question.