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…

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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 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 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 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…

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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: 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…

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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…

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

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

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

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

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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 –