A 100-kg catapult at rest holds a 10-kg watermelon. When shot from the catapult, the watermelon leaves the catapult with a speed of 90 m/s. What is the recoil speed of the catapult?

A frog is sitting on a lily pad when it sees a delicious fly. He darts out his tongue at a speed of 3.40 m/s to catch the fly. The tongue has a mass of 0.410 g, and the rest of the frog plus the lily pad have a mass of 12.5 g. What is the recoil speed of the frog and the lily pad? Ignore drag forces on the pad due to the water.

A rifle with a weight of 40 N fires a 5.5-g bullet with a speed of 210 m/s. (a) Find the recoil speed of the rifle. _______m/s (b) If a 625-N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle. _______m/s

During a circus act, a performer thrills the crowd by catching a cannon ball shot at him. The cannon ball has a mass of m1 = 12.5 kg and the horizontal component of its velocity is v = 8.25 m/s when the performer, of mass m2 = 69 kg, catches it.If the performer is on nearly frictionless roller skates, enter an expression for his recoil speed, in terms of the masses and initial speed. What is his recoil speed, in meters per second?

A baseball with a mass of 0.15 kg is batted into the air. It's initial speed is 35.8 m/s directed at an angle 28 degrees above the horizontal. After 0.19 seconds what is the horizontal component of the balls velocity in m/s?

Identical twins, each with mass 62.0 kg, are on ice skates and at rest on a frozen lake, which may be taken as frictionless. Twin A is carrying a backpack of mass 12.0 kg. She throws it horizontally at 2.80 m/s to Twin B. Neglecting any gravity effects, what are the subsequent speeds of Twin A and Twin B? Twin A     m/s Twin B     m/s

Hello, can you also please include the formula that you used to solve this problem? Thank you!

Starting from rest, two skaters push off against each other on ice where friction is negligible. One is a 64.0 kg woman and one is a 93.0 kg man.  The woman moves away with a velocity of +2.83 m/s.  Find the recoil velocity of the man.  Group of answer choices

A 4.00 g bullet has a muzzle velocity of 290 m/s when fired by a rifle with a weight of 35.0 N. (a)Determine the recoil speed (in m/s) of the rifle.  Answer________m/s   (b) If a marksman with a weight of 800 N holds the rifle firmly against his shoulder, determine the recoil speed (in m/s) of the shooter and rifle.  Answer________ m/s

A baseball pitcher  (m = 85 kg)  is initially standing at rest on an extremely slippery, icy surface. He then throws a baseball  (m = 0.14 kg)  with a horizontal velocity of 54 m/s. What is the recoil velocity of the pitcher? (Assume that the positive direction is where the baseball is thrown. Indicate the direction with + or -