When the driver applies the brakes of a light truck traveling 40 km/h, it skids 3m...
When the driver applies the brakes of a light truck traveling 40 km/h, it skids 3m before stopping. How far will the truck skid if it is traveling 80 km/h when the brakes are applied? Solve using kinetics. Do not use work and energy principles.
Homework Answers
Here we apply concept of kinematics and equation of motion for constant acceleration.
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When the driver applies the brakes of a light truck traveling 40
km/h, it skids 3m...
14-6. When the driver applies the brakes of a light truck traveling 40 km/h, it skids...
14-6. When the driver applies the brakes of a light truck traveling 40 km/h, it skids 3 m before stopping. How far will the truck skid if it is traveling 80 km/h when the brakes are applied?
Problem (1) A UB Shuttle traveling at 43 km/hr skids 2 m before stopping when the...
Problem (1) A UB Shuttle traveling at 43 km/hr skids 2 m before stopping when the driver applies the brakes. How far will the shuttle skid if it is traveling at 85 km/hr when the brakes are applied 85 km/hr
35. A car moving at 20 km/hr skids 10 m with locked brakes before coming to...
35. A car moving at 20 km/hr skids 10 m with locked brakes before coming to rest. How far will the car skid (on the same surface) if it is traveling at 80 km/hr?
A truck is traveling at a constant speed of 56.6 km/h . Suddenly, the driver sees...
A truck is traveling at a constant speed of 56.6 km/h . Suddenly, the driver sees a deer 24.0 m away and slams on the brakes. If the truck hits the deer 2.40 s after the driver slams on the brakes, what was the speed of the truck, in km/h, when the deer was struck? Assume motion was at constant acceleration.
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?
A driver is traveling at a speed of 70 km/h in car A when he looks...
A driver is traveling at a speed of 70 km/h in car A when he looks down to text a friend that he is running late. Just before he looks down. he is 80 m from an intersection, and a bicydist B, traveling at a constant speed of 10m/s,s d= 40 m from that same intersection. The light turns red during the 3 s text, and when the driver looks up, he hits the brakes, causing a constant deceleration of...
The speed limit in a school zone is 45 km/h. A driver traveling at this speed...
The speed limit in a school zone is 45 km/h. A driver traveling at this speed sees a child run onto the road 20 m ahead of his car. He applies the brakes, and the car decelerates at a uniform rate of 11.0 m/s2. If the driver's reaction time is 0.55 s, will the car stop before hitting the child?What is the stopping distance of the vehicle?
A car traveling 54.7 km/h is 21.1 m from a barrier when the driver slams on...
A car traveling 54.7 km/h is 21.1 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.15 s later. (a) What is the car's constant deceleration magnitude before impact? (b) How fast is the car traveling at impact?
A car traveling 52.4 km/h is 23.3 m from a barrier when the driver slams on...
A car traveling 52.4 km/h is 23.3 m from a barrier when the driver slams on the brakes. The car hits the barrier 1.76 s later. (a) What is the car's constant deceleration magnitude before impact? (b) How fast is the car traveling at impact?
14-6. When the driver applies the brakes of a light truck traveling 40 km/h, it skids 3 m before stopping. How far will the truck skid if it is traveling 80 km/h when the brakes are applied?
Problem (1) A UB Shuttle traveling at 43 km/hr skids 2 m before stopping when the driver applies the brakes. How far will the shuttle skid if it is traveling at 85 km/hr when the brakes are applied 85 km/hr
35. A car moving at 20 km/hr skids 10 m with locked brakes before coming to rest. How far will the car skid (on the same surface) if it is traveling at 80 km/hr?
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 driver is traveling at a speed of 70 km/h in car A when he looks down to text a friend that he is running late. Just before he looks down. he is 80 m from an intersection, and a bicydist B, traveling at a constant speed of 10m/s,s d= 40 m from that same intersection. The light turns red during the 3 s text, and when the driver looks up, he hits the brakes, causing a constant deceleration of...
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