Physics Practice Problems Intro to Motion (Kinematics) Practice Problems Solution: A runner moving with an initial velocity of 8.7 m/...

# Solution: A runner moving with an initial velocity of 8.7 m/s slows down at a constant rate of -1.4 m/s2 over a period of 2.0 seconds. What is her velocity at the end of this time?A) 0.70 m/sB) 11.50 m/sC) 2.80 m/sD) 5.90 m/sE) -2.80 m/s

###### Problem

A runner moving with an initial velocity of 8.7 m/s slows down at a constant rate of -1.4 m/s2 over a period of 2.0 seconds. What is her velocity at the end of this time?

A) 0.70 m/s

B) 11.50 m/s

C) 2.80 m/s

D) 5.90 m/s

E) -2.80 m/s

Intro to Motion (Kinematics)

Intro to Motion (Kinematics)

#### Q. An object's position as a function of time is given by the equation y(t) = 5 - 7t  2 + 2t3. Its acceleration is A. constant with an undetermined valu...

Solved • Thu Mar 02 2017 14:32:21 GMT-0500 (EST)

Intro to Motion (Kinematics)

#### Q. If an object moves in a straight line in the negative direction with decreasing speed, its acceleration will beA) zeroB) constantC) negativeD) positiv...

Solved • Mon Jan 16 2017 12:09:12 GMT-0500 (EST)

Intro to Motion (Kinematics)

#### Q. During takeoff, an airplane has an acceleration of 7.75 m/s2. How far has it traveled after 9 s? A) 3.9 m B) 35 m C) 628 m D) 314 m E) 70 m

Solved • Fri Jan 13 2017 13:55:14 GMT-0500 (EST)

Intro to Motion (Kinematics)

#### Q. During takeoff, an airplane has an acceleration of 7.75 m/s2. What is its speed after 9 s? A) 8 m/s B) 0.9 m/s C) 628 m/s D) 314 m/s E) 70 m/s

Solved • Fri Jan 13 2017 13:50:31 GMT-0500 (EST)