A 1500kg car is moving at 42.0 m/s. Determine the stopping distance if the brakes supply a force of 2000 newtons.
apply F = ma
a = 2000/1500 = 1.334 m/s^2
now use V^2 = 2aS
S = 42*42/(2*1.334)
S = 661.169 m
acceleration a = 2000/1500 = 4/3 m/s^2
v^2-u^2 = 2as
0 -42^2 = 2* -4/3 * s
stopping distance s = 2646 m
KE = 1/2mv^2 = 1323000 J
KE as you can see from the equation is related to the mass and the velocity. We're solving for the distance to get to a velocity of 0. This means our KE will also be 0. So, the total KE calculated will equal the total W necessary to bring the car to a stop.
Now we use the equation W = Fd
rearranged to find our required variable we have:
d = W/F = 1323000/2000
= 661 m.
So, you're probably going to kill that family in front of you that you're braking for. Physics is rough.
A 1500kg car is moving at 42.0 m/s. Determine the stopping distance if the brakes supply...
9. A car moving initially with a speed of S m/s brakes to a stop in 10 s. The average braking force is 700 N. Find mass of the car.
HELP ASAP 1500kg car moving at 16 m/s suddenly collides with a stationary car of mass 1000 kg Problem3 1500-kg car moving at 16.00 m/s suddenly collides with a stationary car of mass 1000 kg a) What is the total initial momentum? b) If the two vehicles lock together, what is their combined velocity immediately after the collision? c)What is change in momentum? d)What is the impulse? e) What is the average force acting on the stationary car by the...
4 (2.52). The minimum stopping distance for a car traveling at a speed of 30 m/s is 60 m, including the distance traveled during the driver's reaction time of 0.50 s. a) What is the deceleration of the car while braking? b) What is the minimum stopping distance for the same car traveling at a speed of 40 m/s with the same reaction time and deceleration?
1. a. A truck of mass 2000 kg is moving with a velocity of 20 m/s. If on applying brakes, the truck stops after coming to a distance of 40 m, find the retarding force? b. A car of mass 1000 kg moving with a velocity of 90 km/h collides with a tree and comes to stop in 10 s. What is the change in momentum of the car? What is the force applied by the tree to stop the...
A car (m=1500kg) is going around a round-about at 20m/s. If the radius is 30 meters, what is the force on the car?
A car moving at 48 m/s brakes to a stop in 6 seconds. What is its acceleration?
The brakes are applied to a moving car, causing it to uniformly slow down. While slowing, it moves a distance of 40.0 m in 7.65 s to a final velocity of 1.95 m/s, at which point the brakes are released (a) What was its initial speed (in m/s), just before the brakes were applied?(b) What was its acceleration (in m / s²) while the brakes were applied? (Assume the initial direction of motion is the positive direction. Indicate the direction with the...
Question 181 A car moving at 20 m/s brakes and slides to a stop. If the coefficient of kinetic friction between the pavement and the tires of the car is 0.1, how far does the car slide? O A. 50 m O B. 100 m O C. 200 m O D. 400 m
1) ) A car is travelling at 37. m/ s. The driver hits their brakes and decelerates at 4.5 m/ s^2. How much distance does the car need to stop? 2) Suppose a child pulls a wagon horizontally. The child exerts a force of 51. N and there is frictional force of 18 N acting on the wagon, which opposes the motion. The mass of the wagon is 17.6 kg. (a) Draw a free body diagram for the wagon. (b)...
A car is moving at a speed of 60 m/s, when the driver applies the brakes, which causes a deceleration of 2 m/s2. How many seconds will it take for the car to stop and how far will it travel till it stops? 30 sec, 450 meters 25 sec, 800 meters 30 sec, 1800 meters 20 sec, 900 meters 30 sec, 900 meters Flag this Question Question 192 pts You throw a ball downward from a height of 5 meters...