A.) A 1082 kg van, stopped at a traffic light, is hit directlyin the rear by a 7

Question

A.) A 1082 kg van, stopped at a traffic light, is hit directlyin the rear by a 736 kg car traveling with a velocity of +2.41 m/s.Assume that the transmission of the van is in neutral, the brakesare not being applied, and the collision is elastic. What is thefinal velocity of the car? B.) A projectile (mass = 0.155 kg) is fired at and embedsitself in a target (mass = 2.91 kg). The target (with theprojectile in it) flies off after being struck. What percentage ofthe projectile's incident kinetic energy does the target (with theprojectile in it) carry off after being struck? C.)A person stands in a stationary canoe and throws a 5.11 kgstone with a velocity of 8.05 m/s at an angle of 31.4° abovethe horizontal. The person and canoe have a combined mass of 107kg. Ignoring air resistance and effects of the water, calculate thehorizontal recoil velocity of the canoe. D.)Two air-track gliders of equal mass are initially moving inthe same direction along a straight line. The rearmost glider hasan initial speed of 4.1 m/s and the forward glider has a speed of1.5 m/s. If the collision is elastic, what is the speed of thefirst glider (rearmost) after the collision?What is the speed ofthe second glider (forward)?
A.) A 1082 kg van, stopped at a traffic light, is hit directlyin the rear by a 736 kg car traveling with a velocity of +2.41 m/s.Assume that the transmission of the van is in neutral, the brakesare not being applied, and the collision is elastic. What is thefinal velocity of the car? B.) A projectile (mass = 0.155 kg) is fired at and embedsitself in a target (mass = 2.91 kg). The target (with theprojectile in it) flies off after being struck. What percentage ofthe projectile's incident kinetic energy does the target (with theprojectile in it) carry off after being struck? C.)A person stands in a stationary canoe and throws a 5.11 kgstone with a velocity of 8.05 m/s at an angle of 31.4° abovethe horizontal. The person and canoe have a combined mass of 107kg. Ignoring air resistance and effects of the water, calculate thehorizontal recoil velocity of the canoe. D.)Two air-track gliders of equal mass are initially moving inthe same direction along a straight line. The rearmost glider hasan initial speed of 4.1 m/s and the forward glider has a speed of1.5 m/s. If the collision is elastic, what is the speed of thefirst glider (rearmost) after the collision?What is the speed ofthe second glider (forward)?

Explanation / Answer

for question D.) there isn't a mass given for either glider so is there a way i can find the final velocities without the mass ??

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