A runner of mass 51.1 kg starts from rest and accelerates with a constant acceleration of 0.8 m/s2 until she reaches a velocity of 5.8 m/s. She then continues running at this constant velocity. How long in seconds does the runner take to travel 139 m

Q: A motorist drives north for 35 minutes at 85 km per hour and then stops for 15 minutes. He then…

A: Given: The speed of the motorist in the first go is 85 km/h. The time duration is 35 min. The…

Q: Over a distance of 245 meters, an automobile going initially at +7.0 m/s accelerates evenly at +0.80…

A:

Q: The driver of a car traveling down the interstate slams on the brakes, causing the car to skid to…

A:

Q: n object undergoes acceleration 1.2i+2.4j m/s2 for 4.5 s at which time its velocity is 21i+11j m/s.…

A:

Q: A train is travelling forward along a straight track. It initially travels at 58.0 m/s for 1.1 km,…

A: Given : Initial Velocity = 58 m/s for distance 1.1 km = 1100 m             Final velocity = 49 m/s…

Q: Holden is trying to determine the velocity of his race car. He went 20 meters east, turned around,…

A:

Q: The velocity of an object moving along the x-axis is given in m/s by v(t) = t2 − 6t + 8, where t is…

A:

Q: Over a distance of 245 meters, an automobile going initially at +7.0 m/s accelerates evenly at +0.80…

A: Kinematics.

Q: During a 100 m sprint, Usain Bolt reaches the halfway point (50 m) in 5.5 seconds and then crosses…

A: Given data:  Total displacement (x) = 100 m Total time (t) = 9.7 s Required: The average velocity

Q: a cheetah and a gazelle are both stopped. The gazelle runs and accelerates so that it reaches a…

A:

Q: An object starts from rest at time t = 0.00 s and moves in the +x direction with constant…

A: Given data  The object's initial velocity is: u = 0 The object starts at the time: t1 = 0 s The…

Q: The froghopper can accelerate at 4.00 x 103 m/s2. The froghopper experiences this acceleration for…

A: Consider the acceleration of the froghopper be a, the initial velocity of the froghopper be u, and…

Q: Over a distance of 225 meters, an automobile going initially at +5.0 m/s accelerates evenly at +0.50…

A: Kinematics.

Q: A motorcycle has a constant acceleration of 2.83 m/s². Both the velocity and acceleration of the…

A: Acceleration of motorcycle (a) = 2.83 m/s2

Q: A long distance runner has an average speed of 3.2 m/s. How far (in m) does the runner travel in 42…

A: Given information:The average speed of the runner (v) = 3.2 m/sThe time for which the runner runs…

Q: A cart is given an initial velocity of 7.6 m/s and experiences a constant acceleration of 3.6 m/s?.…

A:

Q: You normally drive on the freeway between two cities at an average  speed of 30 m/s (67 mph), and…

A:

Q: How long did the ball take to return to the juggler’s hand?

A:

Q: A runner makes two complete laps around a track. The distance of the track is 905 meters. It takes…

A: Speed is a scalar quantity and it is defined as the distance traveled in unit time. Velocity is a…

Q: A runner of mass 55.7kg starts from rest and accelerates with a constant acceleration of 1.1 m/s2.…

A: Given: The mass of the runner is 55.7 kg. The initial velocity of the runner is 0 m/s. The…

Q: Starting at x = - 17 m at time t = 0 s, an object takes 17 s to travel 55 m in the +x direction at a…

A:

Q: A car starts from rest at t = 0 s, and speeds up with a constant acceleration of 1.66 m/s2 for 6.00…

A: Given that :a=1.66 m/s2t=6 s

Q: A rocket sled accelerates at 27.1 m/s2 for 3.9 s. How far has it traveled from its initial position…

A:

Q: A pilot flies in a straight path for 1 h 30 min. She then makes a course correction, heading 10…

A: The distance traveled in the original direction is given by: distance = speed x time = 640 mi/h x…

Q: An object undergoes acceleration 2.3i +3.6j m/s² for 5.9 s at which time its velocity is 33i +15j…

A:

Q: A motorcycle has a constant acceleration of 4.41 m/s2. Both the velocity and acceleration of the…

A: Given that,  The initial velocity of the motorcycle, vi=16.2 m/s The final velocity of the…

Q: An object is moving at a constant velocity of 2.0 m/s due east from t = 0 s to t = 2 s. The object…

A: From t=0 to t=2 sec, object is moving with constant velocity. Hence, displacement is :- s=uts=2×2s=4…

Q: At a stop light, a truck traveling at 15 m/s passes a car as it starts from rest. The truck travels…

A:

Q: The citizen leaves a city at 3:00 p.m. It travels at 36.0 m / s when the engine of its car stops.…

A: Given: Initial speed of car (u) = 36.0 m/s During first t1 =12 seconds the acceleration of car = a1.…

Q: Over a distance of 225 meters, an automobile going initially at +5.0 m/s accelerates evenly at +0.50…

A:

Q: An object moves along a straight line and experiences a constant acceleration of +1.36 cm/s2. At t =…

A:

Q: An object is moving in a straight line with constant acceleration.  Initially it is traveling at 16…

A: Initial velocity is given as, u = 16 m/s Final velocity is given as, v = 10 m/s Time taken is given…

Q: A ball is thrown straight down at 1.29 m/s and hits the ground 1.07 seconds later. How many meters…

A: Given  Initial velocity u = 1.29 m/s Time of flight t = 1.07 sec Accelerated = g = 9.8 m/s2