Question

(Ans. 6500)
A Porsche 911 accelerates from rest to 27 m * que north in 5.8 s. The mass of the car is 1400 kg. What is the magnitude and
direction of the average net force that acts on the Porsche?
2 An empty airplane has a mess of 30400 kg and a take-all acceleration of 120 m 52. What is the net force accelerating the planer
(Ans. 36500 N)
3. A 1500 kg car is travelling with a speed of 15.0 ms What is the magnitude of the horizontal net force that is required to bring the car to a har in a distance of 50.0 m2
A:(3560N)
4. A catapult on an aircraft carrier is capable of accelerating a plane from 0 to 56.0 m sin a distance of 80.0 m. Find the average ne
(Ans. 2.61x10^5)
force that the catapuit exerts on a 13 300 kg jet.
6. A runner in a sprint race reaches on s'in 3 s from the start of the race. It her mass is 50 kg, what force must she exert in order to
do this?
(Ans. 150
6. A cricket ball of mass 0.1 kg moving at a speed of 30 m s' is brought to rest by a player in 0.03 second. Find the average force
applied by the player
(Ans. 720
7. A force of & N acts on a body of mass 40 kg at rest. If the force acts for 20 second, calculate final velocity of body (i) distance
travelled by it in 20 s.
(Ans. 4 ms. 40 m
8. A car of mass 1000 kg travelling at 20 m scrashes into a brick wall and comes to rest in 0.5 s. Calculate the average force exerted
by the wall on the car
Ans. 4000 N
o. A car of mass 1200 kg is brought to rest from a speed of 60 m s' by a constant breaking force of 6000 N. Calculate the retardation
and the time in which the car comes to rest.
Ans. 5 ms?​

Answer 1

Answer:

travelled by it in 20 s.

(Ans. 4 ms. 40 m

8. A car of mass 1000 kg travelling at 20 m scrashes into a brick wall and comes to rest in 0.5 s. Calculate the average force exerted

by the wall on the car

Ans. 4000 N

o. A car of mass 1200 kg is brought to rest from a speed of 60 m s' by a constant breaking force of 6000 N. Calculate the retardation

and the time in which the car comes to rest. ...,.........,........

Answer 2

Answer:

F = MA

50 = M(5)

50 = 5M

M = 50/5

M = 10 KG

Explanation: