Post a New Question

physics.

posted by .

1) A racing car has a mass of 1525 kg. What is its kinetic energy if it has a speed of 35 m/s?

* 2-3 Conservation of Momentum

2) A 3.0 kg ball is moving at 3 m/s and strikes a 1.5 kg ball moving at -2 m/s. After the collision, the 1.5 kg ball moves to the right at 2 m/s. What is the final velocity at 3.0 kg ball?
FORMULA(2)>> m1vi+m2vi= m1vf+m2vf

3) A 85 kg running back is moving at +12 m/s and strikes a 125 kg linebacker moving at -8.0 m/s. What is the final velocity if they stick together?
FORMULA(3)>> m1vi+m2vi= (m1+m2)vf


>>PLEASE HELP ME!!!!!

  • physics. -

    1. KE=1/2 mass*velocity^2

    2, 3: what is your question? you are given the data, and the formula.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    A 0.200 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball. (a) What is the mass of the second ball?
  2. physics

    A cart of mass 340 g moving on a frictionless linear air track at an initial speed of 1.2 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. After the collision the first cart continues in its original …
  3. Physics

    A 1200 kg car is moving on the freeway at 65 mph. (A) find the magnitude of its momentum and its kinetic energy in SI units. (b) if a 2400 kg SUV has the same speed asthe 1200 kg car, how much momentum and kinetic energy does it have?
  4. Physics

    Bernoulli's equation is an expression of: the conservation of mass the conservation of total energy the conservation of kinetic energy the conservation of momentum the conservation of velocity My ans: the equation states that it should …
  5. Physics

    A car of mass 1100 kg, moving with a speed of 73 mph on a highway, passes a small SUV with a mass 1 1 2 times bigger, moving at 1/2 of the speed of the car. (a) What is the ratio of the momentum of the SUV to that of the car?
  6. Physics

    A bullet with a mass of 55 grams moving with a speed of 100 m/s slams into and wedges in a 1.9 kilogram block of wood supported by a string initially at rest. Which one, conservation of energy or conservation of momentum, can be applied …
  7. Physics 11th grade

    1) A racing car has a mass of 1525 kg. What is its kinetic energy if it has a speed of 35 m/s?
  8. Physics (MOMENTUM)

    Please, help me answer this question. Two balls are moving in the same direction. Ball A has half the mass of ball B, and is moving at twice its speed. (a) Which ball has the greater momentum?
  9. Physics

    Please, help me answer this question. Two balls are moving in the same direction. Ball A has half the mass of ball B, and is moving at twice its speed. (a) Which ball has the greater momentum?
  10. Physics (ASAP PLEASE)

    Please, help me answer this question. Two balls are moving in the same direction. Ball A has half the mass of ball B, and is moving at twice its speed. (a) Which ball has the greater momentum?

More Similar Questions

Post a New Question