A person walks first at a constant speed of 4.60 m/s along a straight line from point ® to point ® and then back along the line from ® to ® at a constant speed of 3.10 m/s. (a) What is her average speed over the entire trip? m/s (b) What is her average velocity over the entire trip? m/s

An airplane starts its takeoff by moving at 2.6 m/s. The plane must then accelerate at 3.0 m/s2 for the next  [t] 30 s to reach its final takeoff speed. To the nearest tenth of a kilometer, how far does the plane travel while accelerating to its takeoff speed?

(A A person walks first at a constant speed of 4.80 m/s along a straight line from point to point and then back along the line from B to A at a constant speed of 3.05 m/s What is her average velocity over the entire trip? B m/s

A swimmer bounces straight up from a diving board and falls feet first into a pool. She starts with a velocity of 3.00 m/s, and her takeoff point is 1.30 m above the pool.(a) How long are her feet in the air?  s(b) What is her highest point above the board?  m(c) What is her velocity when her feet hit the water?  m/s

A person walks first at a constant speed of 4.90 m/s along a straight line from point to point and then back along the line from to m/s. (a) What is her average speed over the entire trip? m/s (b) What is her average velocity over the entire trip? m/s @ at a constant speed of 3.10

solve the following exercise

A particle moves in one dimension, and its position as a function of time is given by x (2.0 m/s)t + (-3.6 m/s²)e². (a) What is the particle's average velocity from t 0.45 s to t = 0.55 s? (Indicate the direction with the sign of your answer.) m/s (b) What is the particle's average velocity from t = 0.49 s to t = 0.51 s? (Indicate the direction with the sign of your answer.) m/s MacBook Air 888 F1 F2 F3 F4 F5 F6 @ #3 $4 3 4 Q W E R T G

An object has an initial velocity of 15 m/s.  How long must it accelerate at a constant rate of 3 m/s2 before its final velocity is equal to twice its initial velocity?

Super Joe, using his incredible Physics knowledge, starts from rest and accelerates at a spectacular rate of 12.0 m/s? for a distance of 375 m. He then uses his awesome powers to slow down at the rate of -7.50 m/s? until he comes to rest. (a) What is the total distance traveled by Super Joe? (b) How long was Super Joe in motion, from start to stop?

5. Kathy tests her new sports car by racing with Stan. Both start from rest, but Kathyleaves the starting line 1.00 s after Stan does. Stan moves with a constant acceleration of 3.50m/s2, while Kathy maintains an acceleration of 4.90 m/s2.(a.) Find the time at which Kathy overtakes Stan.(b.) Find the distance Kathy travels before she catches him.(c.} Find the speeds of both cars at the instant Kathy overtakes Stan.