You toss a 0.150-kg baseball straight upward so that it leaves your hand (from the ground) moving at 10.0 m/s. What is the speed of the ball when it is 2m high? Ignore air resistance. 60.8 m/s O 7.8 m/s O 3.9 m/s O 5.0 m/s

Two objects are connected by a light string passing over a light, frictionless pulley. The 5.00-kg object is released from rest at a point 4.00 m above the floor. Find the speed of the 5.00-kg object when it is 1 meter above the floor. m, = 5.00 kg h = 4.00 m m, = 3.00 kg 4.756 m/s 3.834 m/s 4.475 m/s 3.942 m/s 4.135 m/s 3.384 m/s А. D. В. Е. С. F.

1. A girl jumps upward off a trampoline with a speed of 3.6 m/s. How high will she rise? Ignore air resistance. Previous submissions:

How much kinetic energy does a student of mass 60. kilograms running at 3.0 meters per second possess? A 180 J 270 J 540 J 8100 J

A 0.25 kg mass is placed on a vertically oriented spring that is stretched 0.56 meters from its equilibrium position. If the spring constant is 105 N/m, how fast will the mass be moving when it reaches the equilibrium position? Hint: You cannot ignore the change in gravitational potential energy in this problem. Please give you’re answer in m/s.

A0.90 kg brick compresses a spring 0.35 meters at point A and the spring has a spring constant of 75 N/m. If the brick is launched from rest from point A, what is its velocity at point B? A ha = 0 hB = 0 VA = 0 Vв > 0 A 10.2 m/s B 3.20 m/s 46.8 m/s D 38.7 m/s O O O O

A 7.0 kg bowling ball moves at 2.35 m/s. How fast must a 2.20 g Ping-Pong ball move so that the two balls have the same kinetic energy? m/s

! & OD. Mass 2M and speed 3V O E. Mass 3M and speed V *. 60 QUESTION 2 OA. Mass 3M and speed 2V Which of the following bodies has the largest kinetic energy? OB. Mass M and speed 4V OC. All four of the above have the same kinetic energy OA. 4.85 km/h and 39.8⁰ OB. 3.11 km/h and 39.8⁰ OC.3.73 km/h and 39.8⁰ OD.7.80 km/h and 39.8⁰ OE. 6.20 km/h and 39.8⁰ Two skaters collide and embrace in a completely inelastic collision. Alfred, with mass 83.0 kg, is originally moving east with speed 6.20 kmh. Barbara, with mass 55.0 MacBook UESTION 1 tion Status: are stuck kg, is originally moving north with speed 7.80 km/h. Find the magnitude and direction (with respect to +x direction) of the velocity of the couple after collision when they

On the roller-coaster shown, a car is moving 10 m/s toward the right at point 1. Assuming no friction, calculate the speed of the car at point 4. 3 40 m 26 m 15 m 29.37 m/s 22.71 m/s 20.89 m/s 26.17 m/s A. D. В. 25.07 m/s Е. С. 24.29 m/s F.

A ball of mass m= 0.38 kg is tied to a massless string of length L=1.2m. The ball is released at rest from point A as shown in the figure. a) What is the speed of the ball as it passes through point B? b) What is the tension in the string at point B?