Questions 1. A transport truck with a mass of 10 000 kg and a car with a mass of 2000 kg are
travelling at the same velocity (100 km/h) but in opposite directions. The truck is
travelling to the left, and has a momentum of -1 000 000 kg:km/h. The car is
moving to the right, and has a momentum of + 200 000 kg:km/h. What is the total
momentum after the collision? In which direction will these vehicles move if they
collide

For a particular reaction, ? h = -144.6 kj and ? s = -301.2 j/k. calculate ? g for this reaction at 298 k.

Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?