10. A toy car on a track starts from rest at the top of a 2.3 meter hill and rolls down. The car then goes
up a ramp and flies off the track (see diagram below). If the end of the ramp is 0.91 meters high, at
what speed does the car leave the track?
2.3 m
0.91 m

Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?