A racing car is traveling along a horizontal track. The car, starting from rest accelerates uniformly at 4.50ms-² for 15s when it reaches maximum speed. It then travels at this speed for 20s before deceleration uniformly at 5.60ms-² until it come to rest. i. Determine the maximum speed reached by the car
Ii. Determine the distance travelled by the car before reaching maximum speed
iii. Determine the time taken for the car to decelerate from it’s maximum speed and comes to rest
iv. Determine the total distance travelled by the car

What object a collides with object b and bounces back its final momentum is?

What effects result when there is an impact between earth and an asteroid? check all that apply. a.massive flooding. b.extinction of many life forms.c.major earthquakes change in average global temperature.d. giant dust cloud

Your starship, the aimless wanderer, lands on the mysterious planet mongo. as chief scientist-engineer, you make the following measurements: a 2.50-kg stone thrown upward from the ground at 14.0 m/s returns to the ground in 5.70 s ; the circumference of mongo at the equator is 2.20×10^5 km ; and there is no appreciable atmosphere on mongo. (a) the starship commander, captain confusion, asks for the following information: what is the mass of mongo? (b) if the aimless wanderer goes into a circular orbit 2.20×10^4 km above the surface of mongo, how many hours will it take the ship to complete one orbit? (c) an unmanned spacecraft is in a circular orbit around the moon, observing the lunar surface from an altitude of 44.0 km . to the dismay of scientists on earth, an electrical fault causes an on-board thruster to fire, decreasing the speed of the spacecraft by 23.0 m/s . if nothing is done to correct its orbit, with what speed (in km/h) will the spacecraft crash into the lunar surface?