A car is traveling with a constant speed when the driver suddenly applies the brakes, giving...
A car is traveling with a constant speed when the driver suddenly applies the brakes, giving the car a deceleration of 3.50m/s2. The car comes to a stop in a distance of
34.0 m.
- What was an initial speed of the car?
- How long (the time) did it take for this car to stop?
- What was the car's speed when it had traveled 17.0 m from the point where the brakes were applied?
- How long did it take for this car to travel first 17.0 m from the point where the brakes were applied?
- How long did it take for this car to travel between 17.0 m and 34.0m from the point where the brakes were applied?
Homework Answers
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A car is traveling with a constant
speed when the driver suddenly applies the brakes, giving...
Problem 3. A car is traveling at a speed of 20 m/s when the driver applies...
Problem 3. A car is traveling at a speed of 20 m/s when the driver applies the brakes. The car stops in 5 seconds. How far (in meters) does the car travel in that time? Assume the car's deceleration is constant.
The brakes are applied to a car traveling on a dry, level highway. A typical value...
The brakes are applied to a car traveling on a dry, level highway. A typical value for the magnitude of the car's acceleration is 4.85 m/s2. If the car's initial speed is 28.5 m/s, how long does it take to stop and how far does it travel, starting from the moment the brakes are applied? time to stop? stopping distance?
A car is moving at a speed of 60 m/s, when the driver applies the brakes,...
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
The driver of a car traveling at 54 ft/sec suddenly applies the brakes. The position of...
The driver of a car traveling at 54 ft/sec suddenly applies the brakes. The position of the car is s=54t-31, 1 seconds after the driver applies the brakes. How many seconds after the driver applies the brakes does the car come to a stop? O A. 54 sec OB. 9 sec O C. 27 sec OD. 18 sec
11. A driver traveling at 27.8m/s tries to stop the car and finds that the brakes...
11. A driver traveling at 27.8m/s tries to stop the car and finds that the brakes have failed. The emergency brake is then pulled and the car comes to a stop in 130 m. Find the car's deceleration.
A car of mass 875 kg is traveling 30.0 m/s when the driver applies the brakes,...
A car of mass 875 kg is traveling 30.0 m/s when the driver applies the brakes, which lock the wheels. The car skids for 5.60 s in the positive -direction before coming to rest. (a) What is the car's acceleration? (b) What magnitude force acted on the car during this time? (c) How far did the car travel? [Ans: ()-536 m/s (b) 4690 N(c) 84,0 m]
A car of mass 772 kg is traveling 24.4 m/s when the driver applies the brakes,...
A car of mass 772 kg is traveling 24.4 m/s when the driver applies the brakes, which lock the wheels. The car skids for 5.27 s in the positive x-direction before coming to rest. a). What is the car's acceleration (in m/s2)? (Indicate the direction with the sign of your answer.) b). What magnitude force (in N) acted on the car during this time? c). How far (in m) did the car travel?
The driver of a car traveling on the highway suddenly slams on the brakes because of...
The driver of a car traveling on the highway suddenly slams on the brakes because of a slowdown in traffic ahead. A) If the car’s speed decreases at a constant rate from 74 mi/h to 50 mi/h in 3.0 s, what is the magnitude of its acceleration, assuming that it continues to move in a straight line? Answer is in mi/h^2 B) What distance does the car travel during the braking period? Answer is in ft
a car is traveling at a constant speed of Vo on a straight, level road. After...
a car is traveling at a constant speed of Vo on a straight, level road. After the brakes are applied at t=0 seconds, the motion can be approximated by: x=t^3/100-t^2 +17t where x is the distance traveled in meters and t is the time in seconds. Determine: A the initial velocity (Vo), B. the time required for the car to stop, C. The distance required for the car to stop, and D. The maximum deceleration during braking.
A car traveling 56 km/h is 22.0 m from a barrier when the driver slams on...
A car traveling 56 km/h is 22.0 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.03 s later. (a) What was the car's constant deceleration before impact? m/s2 (b) How fast was the car traveling at impact? m/s
Problem 3. A car is traveling at a speed of 20 m/s when the driver applies the brakes. The car stops in 5 seconds. How far (in meters) does the car travel in that time? Assume the car's deceleration is constant.
The driver of a car traveling at 54 ft/sec suddenly applies the brakes. The position of the car is s=54t-31, 1 seconds after the driver applies the brakes. How many seconds after the driver applies the brakes does the car come to a stop? O A. 54 sec OB. 9 sec O C. 27 sec OD. 18 sec
11. A driver traveling at 27.8m/s tries to stop the car and finds that the brakes have failed. The emergency brake is then pulled and the car comes to a stop in 130 m. Find the car's deceleration.
A car of mass 875 kg is traveling 30.0 m/s when the driver applies the brakes, which lock the wheels. The car skids for 5.60 s in the positive -direction before coming to rest. (a) What is the car's acceleration? (b) What magnitude force acted on the car during this time? (c) How far did the car travel? [Ans: ()-536 m/s (b) 4690 N(c) 84,0 m]
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