A motorboat starting from rest travels in a straight line on a lake. (a) If the boat achieves a speed of 7 m/s in 11.9 s, what is the boat's average acceleration? Then, in 3.1 more seconds, the boat's speed is 20 m/s. (b) What is the boat's average acceleration for the total time?

Q: Suppose a dragster decelerates from 50.0 m/s with a constant acceleration. It comes to a stop in a…

A:

Q: What is the shortest time a bus can travel the distance between stations if the maximum permitted…

A: Maximum speed (v) = 30 kmhr= 518×30 ms= 8.33 msMagnitude of maximum acceleration or deacceleration =…

Q: A subway train starts from rest at a station and accelerates at a rate of 2.50 m/s? for 15.90…

A:

Q: A motorist drives north for 35 minutes at 85 km/h and then stops for 15 minutes. He then continues…

A: Recall Average velocity=Total displacement/total time

Q: A automobile climbed up a hill at a conSistent speed of 55 m/s before descending at a speed of 65…

A: To determine: (a) The average speed  The time taken to travel up the hill is  t1=xv1 where x is the…

Q: A motorist drives north for 32.0 minutes at 80.5 km/h and then stops for 15.0 minutes. He then…

A: We know that:

Q: A automobile climbed up a hill at a consistent speed of 50 m/s before descending at a speed of…

A:

Q: A sports car accelerates in second gear from 60.4 km/h to 84.3 km/h in 2.8 s. (a) What is the…

A: First, we need to convert the speeds from kilometers per hour (km/h) to meters per second (m/s)…

Q: A ball is thrown upward and returns to the ground in 10 sec. (a) What was its initial velocity? (b)…

A: Dgh

Q: A student drives the 105-mi trip back to campus after spring break and travels with an average speed…

A: Given: Total distance of the trip = 105-mi, Average speed for the first part of the trip, v1 = 56…

Q: A speedboat starts from rest and accelerates at +2.34 m/s2 for 7.87 s. At the end of this time, the…

A:

Q: The average person passes out at an acceleration of 7g (that is, seven times the gravitational…

A: Given:  acceleration, a = 7 g = 7 x 9.8 = 68.6 m/s2 initial velocity, u = 0 m/s  final velocity, v =…

Q: A automobile climbed up a hill at a consistent speed of 35 m/s before descending at a speed of…

A: Given: The speed when the automobile travels up the hill is 35 m/s.             The speed when the…

Q: ball is thrown up at 70 m/s. It goes up and then falls to its original height. (a) How long does it…

A: As per our guidelines, we are supposed to answer only first three subparts in case of multiple…

Q: A car traveling 30 m/s due east turns a smooth corner and heads northeast. The car maintained a…

A:

Q: shut for 0.35 s. If you are driving a car at 69 km/h during such a sneeze, how far does the car move…

A: Speed = distance traveled /time taken Time taken =0.35 sec  Speed =69km /h           = 69 ×1000/3600…

Q: A sprinter starts from rest and accelerates to her maximum speed of 9.9 m/s in a distance of 9.5 m.…

A: The initial speed of the sprinter is 0 m/s. The maximum speed of the sprinter is 9.9 m/s after…

Q: A motorist drives north for 37.0 minutes at 76.5 km/h and then stops for 15.0 minutes. He then…

A:

Q: A coin was tossed vertically straight upward with initial velocity 78 m/s. As the coin reaches…

A: Required : The acceleration of the coin.

Q: During a hard sneeze, your eyes might shut for 0.44 s. If you are driving a car at 75 km/h during…

A:

Q: erson on a road trip drives a car at different constant speeds over several legs of the trip. She…

A:

Q: average speed in km/hr

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Q: A motorist drives 100 km from one city to another in 2.80 h but makes the return trip in only 2.00…

A: The average speed of the total trip can be expressed as,

Q: Ferrari sports car can accelerate from rest to 81 km/h (about 60 mi/h) in 1.5 s. What is its average…

A: Given: The initial velocity of the car is 0 km/h. The final velocity of the car is 81 km/h. The time…

Q: A soccer ball is released from rest at the top of a grassy incline. After 6.2 seconds, the ball…

A: a) At rest t=0 and yi=0 at t=6.2sec yf=47 m

Q: A automobile climbed up a hill at a consistent speed of 35 m/s before descending at a speed of 45…

A:

Q: A stone is falling vertically downward from a tall building of height 70m. (a) How much time it will…

A:

Q: Usually, Tony travels to Bunbury from Perth city in 2.50 hours. One day he increases his average…

A: a) Given data: The time required to reach Bunbury from Perth is 2.5 hours at the initial average…

Q: A car accelerates to 150m/s in 3 seconds from rest (a)what is the acceleration? (b)what distance did…

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Q: What constant acceleration, in SI units, must a car have to go from zero to 60 mph in 10 s?

A: We have to find the constant acceleration of the car. We are aware that the automobile must…

Q: A automobile climbed up a hill at a consistent speed of 55 m/s before descending at a speed of 65…

A: Let the total distance along the hill be d. Time is given by distance/velocity. (a) So, Time taken…

Q: During a hard sneeze, your eyes might shut for 0.38 s. If you are driving a car at 94 km/h during…

A:

Q: (a) What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a…

A:

Q: In order to pass a physical education class at a university, a student must run 1.0 mi in 13.3 min.…

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 –