Mr. H ignites the enthusiasm of the class with a home-made cannon demonstration. The 1.27-kg cannon is loaded with a 54-gram tennis ball and placed on the floor. Mr. H adds the fuel, waits for its vapors to fill the reaction chamber and then brings a match nearby. The explosion stuns the crowd and propels the ball forward. A photogate measurement determines that the cannon recoiled backwards with a speed of 7.8 m/s. Determine the speed of the ball.

An astronaut floating at rest in space has run out of fuel in her jetpack. She realizes that throwing tools from her toolkit in the opposite direction will help propel her back toward the space station. If the astronaut has a mass of 85 kg and she throws a hammer of mass 4.5 kg at a speed of 4 m/s, what will be the approximate resultant velocity that carries her back to the space station?

An elastic collision occurs in one dimension, in which a 10 kg block traveling at 5 m/s collides with a 5 kg block traveling at 3 m/s in the same direction. What are the velocities of the two blocks immediately after the collision?

A soccer ball of 4.40925 (2 kilosg) pounds moves to the right a speed of 0.5 m/s.  Hits a 0.1102311 (0.05 kilosg) pounds tennis ball initially moving to the left at 2 m/s.  The collision is elastic and takes place in one dimension, along the x axis. What is the approximate final speed of the tennis ball, vf,g?

John is in a  lab performing an experiment on collision. John takes a 3.0 kg car and sets it moving right with a speed of 1.0 m/s. This car collides with a second car of mass 6.0 kg that John has given a speed of 3.0 m/s left. After the collision, John notes the 3.0 kg car is moving 1.0 m/s left. From this, what would John observe as the velocity of the 6.0 kg car?     A. 2.0 m/s to the right   B. 0.80 m/s to the left   C. 0.80 m/s to the right   D. zero m/s   E. 2.0 m/s to the left

A 25 gram bullet is fired at 124 m/s into a 5.00 Kg block, the bullet penetrates the block and exits at 99 m/s. what is the speed of the block after the bullet goes thru it?

An 8.24 kg mass moving east at 17.2 m/s on a frictionless horizontal surface collides with a 11.4 kg mass that is initially at rest. After the collision, the 8.24 kq mass moves south at 2.06 m/s. What is the magnitude of the velocity of the 11.4 kg mass after the collision? Submit Answer Tries 0/90 What is the angle relative to the east? Submit Answer Tries 0/90 What percentage of the initial kinetic energy is lost in the collision? Do not enter units. Submit Answer Tries 0/90

Bob and Tom take a sled weighing 10 N to a frozen pond. The sled is initially at rest on the ice. Bob who weighs 490 N runs at 2 metres per second and jumps on the sled. A few seconds later, Tom who weighs 540N runs at 4 metres per second and jumps on the sled with Bob. Keep all values to 3 decimal places. A)What is the velocity of the sled after Bob jumps on to it? B)What is the velocity of the sled after Tom jumps on it?

A ball of mass 0.34 kg moving with a speed of 2.7 m/s to the right collides head on with a 0.24 kg ball at rest. If the collision is elastic, what is the speed and direction of each ball after collision?

A 3kg mass with an initial velocity of (6)m/ collides with and sticks to a Skg mass with an initial velocity of(-2)m/s. The final velocity (in /s) of the composite mass is Select one: 4.5î –0.53 a. b. 2.25i –1.253 Sî – 0.33} C. 2î –1.5ĵ d.