PLEASE HELP...
13. A body of mass 500g is at rest on a frictionless surface. Calculate the distance traveled
by it in 10 s when acted upon by a force of 10-^2N
14. A constant force of 50 N is applied to stop a body of mass 20 kg moving initially with a
speed of 15 ms^-1. How long does it take for the body to stop?
15. While launching a rocket of mass 2 X 10^4 kg, a force of 5 X 10^5 N is applied for 20 s.
What is the velocity attained by the rocket at the end of 20 s?
16. A car of mass 1000 kg is moving at a velocity of 10 ms^-1 & is acted upon by a forward
force of 1000 N (due to engine) & a retarding force of 500 N (due to friction). Find its
velocity after 10 s.
17. A force of 100 Nacts on a mass of 1 kg for 5 s. Calculate the change in momentum &
the change in velocity.
18. A vehicle of 1 ton traveling at a speed of 40 kmhr^-1 is to be stopped within a distance of
10 m. What is the force required to achieve this?
19. A car of mass 1000 kg is moving at a velocity of 20 ms^-1 crashes into a brick wall &
comes to rest in 0.5 s. Calculate the force exerted by the wall.
20. A catapult on an aircraft carrier is capable of accelerating a plane from 0 ms 1 to 40 ms
over a distance of 80 m. Find the average net force that the catapult exerts on a 13300
kg jet.
Answers
Step-by-step explanation:
PLEASE HELP...
13. A body of mass 500g is at rest on a frictionless surface. Calculate the distance traveled
by it in 10 s when acted upon by a force of 10-^2N
14. A constant force of 50 N is applied to stop a body of mass 20 kg moving initially with a
speed of 15 ms^-1. How long does it take for the body to stop?
15. While launching a rocket of mass 2 X 10^4 kg, a force of 5 X 10^5 N is applied for 20 s.
What is the velocity attained by the rocket at the end of 20 s?
16. A car of mass 1000 kg is moving at a velocity of 10 ms^-1 & is acted upon by a forward
force of 1000 N (due to engine) & a retarding force of 500 N (due to friction). Find its
velocity after 10 s.
17. A force of 100 Nacts on a mass of 1 kg for 5 s. Calculate the change in momentum &
the change in velocity.
18. A vehicle of 1 ton traveling at a speed of 40 kmhr^-1 is to be stopped within a distance of
10 m. What is the force required to achieve this?
19. A car of mass 1000 kg is moving at a velocity of 20 ms^-1 crashes into a brick wall &
comes to rest in 0.5 s. Calculate the force exerted by the wall.
20. A catapult on an aircraft carrier is capable of accelerating a plane from 0 ms 1 to 40 ms
over a distance of 80 m. Find the average net force that the catapult exerts on a 13300
kg jet.