Find The Speed Of The Tortoise If It Took 5hrs To Travel A Distance Of 3 Kilometers?, Calculate The Velocity Of A Car That Travels 556km Northeast In

Find The Speed of the tortoise if it took 5hrs to travel a distance of 3 kilometers?

Calculate the Velocity of a car that travels 556km northeast in 4hours

As a car comes to a stop, it slows from 25 m/s in 2.8s. FInd the acceleration of the car

Please Answer This

 

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1. Find The Speed of the tortoise if it took 5hrs to travel a distance of 3 kilometers?

Given:

t (time) = 5 hours         d (distance) = 3 km         v (velocity) = ? unknown

velocity = distance / time

            = 3 km / 5 hr

            = 0.6 km/hr

0.6 km / hr × 1000 m /1 km × 1 hr / 3600 seconds = 0.1667 m/s

2. Calculate the Velocity of a car that travels 556km northeast in 4hours.

t (time) = 4 hours        d (distance) = 556 km       v (velocity) = ? unknown

velocity = distance / time

             = 556 km / 4 hr

             = 139 km / hr

139 km / hr × 1000 m /1 km × 1 hr / 3600 seconds = 36.61 m/s

3. As a car comes to a stop, it slows from 25 m/s in 2.8s. FInd the acceleration of the car

a (acceleration)   = ? unknown

Vf (final velocity)  = 0 m/s (comes to stop)

Vi (initial velocity) = 25 m/s

t (time)                  = 2.8 seconds

Solution:

acceleration = (Vf - Vi) / t

                    = (0 m/s - 25 m/s) / 2.8 s

                    = -25 m/s / 2.8 s

                    = - 8.929 m/s^2  (decelerating negative acceleration)

                   


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