Formula Review for Chapter 11 (Motion)

pg

Formula

Units

Word Problem

Solution

 369

            D

V =    ----

           T

m/s 

1)  Find the velocity in meters per second of a swimmer who swims 110m toward shore in 72 s.

 

369 

            D

V =    ----

            T

m/s 

2)  Find the velocity in meters per second of a baseball thrown 38m from third base to first base in 1.7s.

 

369 

           D

V =    ----

           T

Km/hr 

3)  A cyclist travels 60km in 5 hrs. What is his average velocity?

 

 375

        FV-OV
A=   --------
            T

 m/s/s

4) Natalie accelerates her skateboard along a straight path from 0m/s to 4.0 m/s in 2.5 s. Find her average acceleration

 

 375

        FV-OV
A=   --------
            T

 m/s/s

5)  A turtle swimming in a straight line toward shore has a speed of 0.5 m/s. After 4.0 s its speed is 0.8 m/s. What is the turtle’s average acceleration?

 

 375

        FV-OV
A=   --------
            T

 m/s/s

6)  Find the average acceleration of a northbound subway train that slows down from 12 m/s to 9.6 m/s in 0.8s.

 

  375

        FV-OV
A=   --------
            T

 m/s/s

7)  Mai’s car goes from 24.6 m/s to 26.8 m/s in 0.85 s. What is her average acceleration?