# Physics

A car is travelling at 2 0m/s when it pulls out to pass a truck that is travelling at only 18 m/s the car accelerates at 2 m/s square for 4 sec and then maintains this new velocity. if the car was originally 8 mtrs behind the truck when it pulled out to pass , how far in front of the truck is the car 10 sec later

1. Vf = Vo + a*t = 20 + 2*4 = 28 m/s.
Dc = 20*4 + 0.5*2*4^2 = 96 m. in 4 sec.
Dc = 28m/s * 6s = 168 m. in 6 sec.
Dc = 96 + 168 = 264 m. in 10 sec.

Dt = 18m/s * 10s. = 180 m. in 10 sec.

(264-8) - 180 = Distance in front of the truck.

posted by Henry

## Similar Questions

1. ### Physics

A Car is travelling 20m/s when it pulls out to pass a truck that is travelling at 18 m/s. The car accelerates at 2.0m/s^2 for 7.0 seconds B) What is the car's speed at the end of the period of acceleration? Vi=20 m/s Vf=18 m/s a=
2. ### Physics

A truck travels at a constant speed of 28.0 m/s in the fast lane of a two-lane highway. It approaches a stationay car stopped at the side of the road. When the truck is still 1.2x10^2 m behind the car, the car pulls out into the
3. ### physics

A truck of mass 2000kg travelling due south collides at an intersection with a car of mass 1200kg travelling due east. The car and truck become entangled and move off to the south-east. The truck driver claims to have been
4. ### Physics

As a traffic light turns green, a waiting car starts with a constant acceleration of 6.0 m/s^2.At the instant the car begins to accelerate, a truck with a constant velcoity of 21 m/s pass in the next lane. (a) How far will the car
5. ### Maths:distance covered urgently need help

A car travelling at 60km/hr started a journey travelling in an oppsite direction to his destination.After travelling for 35min the driver realised his mistake he then turn the car back around and started travelling in the correct
6. ### physic

A police car is travelling in a straight line with constant speed vp.A truck travelling in the same direction with speed 3/2 vp passes the police car.The truck driver realizes that she is speeding and immediately begins to slow
7. ### Science

A car of mass m travelling at 20 m/s east on a straight level road and a truck of mass 2m travelling at 20 m/s west on the same road. What is the velocity of the car relative to the truck?
8. ### Math

Two cars, car X and car Y , start moving from the same point P on a cross intersection. Car X is travelling east and car Y is travelling north. Some time later car X is 60 km east of point P and travelling in an easterly direction
9. ### Physics

At t=0 car A and truck B are 350 m apart on a straight road. Starting from rest car A speeds up with a constant acceleration of 10 m/s^2. Truck B is travelling in the opposite direction with a constant speed of 15 m/s. How far
10. ### Physics

1. Car A, with mass of 1250 kg, is travelling at 30 m/s to the east. Car B is a truck with mass of 2000 kg, travelling to the west at 25 m/s. Assume these two vehicles experience an inelastic collision but do not stick together,

More Similar Questions