car was traveling at 33.0 m/s on a poorly lit country road.  The driver started to brake 0.35 seconds after he sees that a bridge is under construction 75 meters ahead.  The car slowed down uniformly.  What must be the minimum acceleration be to avoid crashing into the construction?

Q: What If? Col. Stapp was able to walk away from this experiment. If the human body can survive a…

A: The initial speed of the sled is  The final velocity of the sled is v =0m/s The time taken to stop…

Q: 10. A car is moving at constant speed of 5.00 m/s. The driver sees the edge of the cliff 20.0 m…

A: Dewr student When accelerating of any particle is constant, we can apply the equation of motion as :…

Q: A race car accelerates from rest at the starting line of a race to reach a speed of 30.0 km/h over a…

A: Both the cars initially starts from rest and hence the initial speed of both the cars will be zero.…

Q: 1. A golfer hits a golf ball sitting at rest on a tee. The ball leaves the club at 64 m/s after a…

A:

Q: Which of the following describes an object with a negative acceleration and a positive velocity?…

A: According to bartleby's policy, I am allowed to answer only one question at a time, please post the…

Q: Modern oil tankers weigh over a half-million tons and have lengths of up to one-fourth mile. Such…

A: Given information:Distance required to come to rest (s) = 4.5 km = 4500 m.Time required to stop (t)…

Q: A female motorcycle rider at rest is passed by a friend traveling at a constant rate of 120.…

A: We have equations of motion as: Velocity=distancetime  Distance=U×t+12a×t2 where U is initial…

Q: An airplane acquires a take-off velocity of 150 mph on a 2-mile runway. If the plane started from…

A: Given(s): Initial speed, u=0. Final speed, v=150 mph=150×0.447 m/s=67.05 m/s Covered distance…

Q: A driver is traveling at 10 m/s when they pass a speed limit sign that says 25 m/s. They realize…

A:

Q: You are driving home from school steadily at 97 km/hkm/h for 160 kmkm . It then begins to rain and…

A:

Q: While traveling at 89.52 km/h, a driver drops her cell phone on the floor of the car.  She reaches…

A:

Q: A train is traveling down a straight track at 35 m/s when the engineer applies the brakes, resulting…

A: Initial speed of the train, u = 35 m/s Acceleration, a = -1.0 m/s2 Time interval after applying…

Q: A Gold Car moving at 12.0 m/s passes a Green Car while the Green Car is at rest at a stoplight. The…

A: The distance travelled by the gold car, provided that the gold car has no acceleration can be…

Q: The car is traveling at 30 mi/h when the traffic light 295 ft ahead turns yellow. The driver takes 1…

A:

Q: A Honda civic car is travelling at 5 m/s when the brakes are applied. If the car stopped at the end…

A: Initial velocity (u) = 5 m/s final velocity (v) = 0 m/s time taken (t) = 25 seconds

Q: The elevator starts on the first floor then accelerates 2.46 ft/ss for 5 sec and continues for 12…

A: Acceleration of the elevator a=2.46 ft/s2 Time for which the elevator is accelerated t1=5 s The…

Q: At exactly noon, you pass mile marker 166 in your car. At 2:30 p.m. you pull into a rest stop at…

A: Given data:  Initial reading of mile marker = 166 miles Final reading of mile marker = 329 miles…

Q: A man gets mad at his messed up computer and tosses it out of a 30 m high window. What is the…

A:

Q: A high-performance sports car can go from 0 to 100 mph (44.7 m/s) in 7.9s.  a) What is the car's…

A:

Q: A drunk man was driving his car at a speed of 25.0 m/s (or 90 kph) when he saw a cow in the middle…

A:

Q: An object is moving in a straight line with constant acceleration. Initially it is traveling at 16…

A:

Q: An object is thrown straight down from the top of a building that is 31 m high. The objects initial…

A:

Q: A police car waits in hiding slightly off the highway the highway. A speeding car is spotted by the…

A: Given  Initial speed  of police car( up )=0 m/s acceleration of police car (ap)=4 m/s2 initial speed…

Q: A car speeds past a stationary police officer while traveling 140 km/h. The officer immediately…

A: The given values are, ucar=140 km/h=140 km/h0.27777 m/s1 km/h=38.8888 m/sacar=0upolice=0apolice=10.1…

Q: The driver of a truck slams on the brakes when he sees a tree blocking the road. The truck slows…

A: Given that, x=66.4 macceleration=-5.85 m/s2time=4.20 s Consider the kinematic equation, x=ut+12at2…

Q: The first astronaut has landed on Mars. Conducting some physics experiments, she drops a hammer from…

A: Height=h=2.01m Time=t=1.04 s

Q: 1. Oil leaked from a tank at a rate of r(t) liters per hour. The rate decreased as time passed, and…

A: 1 ) Given:- t(h) :          0   2      4     6     8     10  r(t) L/h :    8.6  7.9  6.8   6.4  5.7…

Q: A car starts from rest and reaches a speed of 48 m/s in 15 seconds. The acceleration increases from…

A: Total time = 15 sec  Initial velocity = 0m/s  Final velocity "v "= 48m/s  Acceleration of first 6…

Q: A person runs with top velocity of 4.6 m/s to be able to catch a bus, which is stopped at the bus…

A:

Q: At a stop light, a truck traveling at 15 m/s passes a car as it starts from rest. The truck travels…

A:

Q: A European sports car dealer claims that his product will accelerate at a constant rate from rest to…

A:

Q: Analyze the following physics problem and select all input variables (only one answer is correct):…

A: The values supplied in the problem statement are :  Initial speed, u = 0 m/s  Time period, t = 5.21…

Q: A car is traveling at 30 m/s ( approximately 67 mph) on I-95 highway. The driver applies the brakes…

A: Given data The initial velocity of the car is given as u = 30 m/s. The time duration is given as t…

Q: A high-performance sports car can go from 0 to 100 mph (44.7 m/s) in 7.9s.  a) What is the car's…

A:

Q: A cheetah sees a gazelle running at a constant speed of 12.4 m/s. The gazelle is 15 m ahead of the…

A: Given, Initially gazelle is 15m ahead. Initial velocity of cheetah is 0m/s. Gazelle's speed is 12.4…

Q: A high performance sports car goes from 0 to 100 mph (44.7 m/s) in 7.2s. A) What is the car’s…

A:

Q: Chloe joined a running marathon for charity. She was trying to overtake another runner who was in…

A: Given initial velocity u =8.5 m/s

Q: A firefighter slides down a pole in a fire station with an acceleration of 5.29 m/s^2. If the…

A:

Q: 13. At time t= 0 an object is traveling to the right along the + x-axis at a speod of 10 m/s with A…

A:

Q: An escaping robber was running at a constant velocity of 5 m/s. Two seconds after, he passed by a…

A:

Q: you are driving at 70km/h when you apply constant acceleration to pass another car. Six seconds…

A: Initial velocity (u) = 70 km/h final velocity (v) = 80 km/h time (t) = 6 seconds Let acceleration =…

Q: You are on one of those fast roller coasters that is traveling at 30 m/s and it accelerates at 4…

A: Given data: Initial velocity (v0) = 30 m/s Acceleration (a) = 4 m/s2 Time (t) = 4 s Required: Final…

Q: A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 16.5 m long.…

A: Given Data : The time after which the bowler hears the sound is given as T = 2.61s  The length of…

Q: You are driving home from school steadily at 95 km/h for 180km. It then begins to rain and you slow…

A: Average speed is the mean value of the speed of a body over a period of time.  Here, we calculate…

Q: While traveling at 56.14 km/h, a driver drops her cell phone on the floor of the car.  She reaches…

A: Consider the car was not accelerating during the event and the velocity of the car is, v=dt…

Q: An airplane needs to gain an acceleration of 0.79  m/s2  to take off on a  2000 m runway, what is…

A: Given data:  Initial velocity (V0) = 0 m/s Acceleration (a) = 0.79 m/s2 Distance traveled (Δx) =…

Q: The brakes on your car can slow you at a rate of 5.2 m/s2. (a) If you are going 137 km/h and…

A: Given information: Here, a is car’s deceleration, vi and vf are the car’s initial and final speed…

Q: A skier is filmed by a motion picture photographer who notices him traveling down a ski run. The…

A: given that,skier travels: 36m during 4th sec48m during 6th sec

Q: A car is moving along a straight road with an initial velocity of V;=23 m/s and an acceleration, a=5…

A:

Q: An automobile is driving excessively fast at a constant speed of 28m/s. An officer notices the…

A:

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –