I'll give best answer, stars, as many points as i can

a 2,460 kg truck traveling north with a speed of 130 km/hr runs into a car traveling in the same direction with a speed of 89 km/hr.
the mass of the car is 1,225 kg.
after the collision, the two move northward together as one mass.
what is the speed of the wreck?

a) 13.4 km/hr

b) 120 km/hr

c) 22.7 km/hr

Aprojectile is launched horizontally 10m above the ground and with an initial velocity of 15 m/s. a) sketch the trajectory using an appropriate coordination system. b) how long for the projectile to reach the ground. c) how far did projectile travel horizontally before striking the ground. d) determine the projectilex & y position at t-1.3s e) determine the magnitude and direction of projectile velocity at t= 1.3s f) determine the magnitude and direction of projectile acceleration at t-1.3s

When does your body conduct current more readily?

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?