A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the slop , it’s speed is 4m/s. But 3 seconds later,at the bottom of the slope,it’s speed is 22m/s. What is the average acceleration?

Q: Mr. Mangan runs 100 m south in 12 seconds and 75 m west in 9 seconds. What is his average speed?…

A: Given: The positive and negative axes and directions are shown.

Q: Saab advertises a car that goes from 0 to 60 mi/hr. in 6.2 seconds. What is the average acceleration…

A: The average acceleration of an object with an initial velocity vo and final velocity vf is given by,…

Q: If you run in a straight line at a constant speed of 6 m/s, how far do you travel in 3 seconds? 18…

A:

Q: The Oscar Mayer Weinermobile is moving at 6 m/s when it begins to accelerate at 3.1 m/s2 . To the…

A:

Q: A body starts from rest, moves in a straight line with constant acceleration and covers a distance…

A: The equations of motion are  where, u is the initial velocity, v is the final velocity, a is the…

Q: 5. In 5.0 s, a particle moving with constant acceleration along the x axis goes from x = 20 m to x =…

A:

Q: On the Moon, where the acceleration of gravity is very close to one sixth that of the earth, an…

A: Here  time is given ,t= 7.8 s  Acceleration ,a= g/6

Q: A cheetah chasing after an ostrich is sprinting at 9.5 m/s. In order to catch the ostrich, it speeds…

A: Given data:  Initial velocity (Vi) = 9.5 m/s Final velocity (Vf) = 12.7 m/s Time (t) = 2.1 s…

Q: A ball starts from rest and rolls down a hill with uniform acceleration, traveling 200 m during the…

A: Since the ball starts from rest the initial position is zero, and initial velocity is zero, the…

Q: Gretchen runs the first 4.0 km of a race at 6.0 m/s. Then a stiff wind comes up, so she runs the…

A: Given data The distance of the first portion of the race is given as d1 = 4 km. The velocity of…

Q: A car enters the freeway with a speed of 8 m/s and accelerates uniformly for 3.5 km in 2.5 min. How…

A: Given data The speed of the car is u = 8 m/s. The distance traveled by car is S = 3.5 km. The time…

Q: An F18 is launched from the runway of an aircraft carrier. Starting from rest, in 2 s, the plane…

A: Write the given values with the suitable variables. u=0t=2 sv=151 km/h=151×10003600 m/s=41.94 m/s…

Q: A stone is thrown vertically upward at the rate of 20 m/s. It will return to the ground after how…

A:

Q: A bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11 s. What…

A: Given  A bird, accelerating from rest at a constant rate , experience a displacement of 28 m in 11…

Q: An object moves along the positive x-axis with a speed of V1 =9 m/s for 2 seconds, then moves along…

A: Average speed = (Total distance)/(Total time) Distance d1 = speed * time = 9*2 = 18 m Distance d2 =…

Q: Juliette is driving her car when she sees a cat run across the road. If she is able to stop the car…

A: Final speed,  Time,  Distance,

Q: A ball is thrown straight upward from ground level with a speed of 18m/s How much time passes before…

A: Given, A ball is thrown straight upward Intitial speed =u=18 m/s Let total time =t sec

Q: An object starts from rest and accelerates at a rate of 3.0 m/s/s for 10 seconds. What is the…

A: Given data:  Initial velocity (v0 ) = 0 m/s Acceleration (a) = 3.0 m/s2 Time (t) = 10 s Required:…

Q: A car accelerates from a stop light at 3M/S2 until it is traveling at a velocity of 15M/S? At that…

A:

Q: A jet plane moving at 300 m/s accelerates at a constant rate to 400 m/s over a distance of 3.5 km.…

A: By equation of motion:- V2 = U2 + 2.a.s Here, s = travelled distance = 3.5 Km = 3500 m u = initial…

Q: How far does a car travel in 3.0 s if its initial velocity is 6.0 m/s and its acceleration is 2.0…

A:

Q: A bald eagle flies a distance of 140 km, north in 1.5 hours. Then it flies another 45 km in the same…

A: Given data The total distance traveled by the eagle is d = 140 km + 45 km = 185 km. The total time…

Q: A westward moving bicycle slows down from 10.0 m/s to 4.0 m/s in 3.0 seconds. What is the magnitude…

A:

Q: A tourist drops his cell phone from the top of the Renaissance tower and according to the…

A: Here the distance traveled by the cell phone is 270m.

Q: A ball is thrown upward in air with initial velocity of 980 cm/s. How long it needs to reach its…

A: The ball’s initial velocity is, When a ball is thrown upward and reaches its maximum height, the…

Q: A drop tower of an amusement park rises at 5 m/s and is 45 m above the ground when one of the…

A: The equation of motion we use to solve this is s = ut + 12at2, where u = the initial velocity t =…

Q: A motorist drives 100 km from one city to another in 2.80 h but makes the return trip in only 2.00…

A: The average speed of the total trip can be expressed as,

Q: What is the average velocity of a car that travels from mile marker 32, to mile marker 214 on I-10…

A:

Q: A ball starts from rest and rolls down a hill with uniform acceleration, traveling 190 m during the…

A:

Q: A roller coaster car rolls from rest down a 20° incline with an acceleration of 5.0 m/s? How far…

A:

Q: A tennis ball is tossed vertically upwards and travels a distance of 6.5 m in 1.2 seconds. What was…

A: Given  Distance = D = 6.5 m  Time = T= 1.2 sec  U =?????   a =-g = -9.8 m/s²

Q: When it takes a car 8.9 s to increase its speed from 4.5 m/s to 25.4 m/s, what is the magnitude of…

A:

Q: A deer is running along the horizontal direction with a constant velocity of 19.1 m/s. The moment…

A: Solution: given that speed of dear = 19.1 m/s speed of tiger = 4.8 m/s t = 13.9 s to find the…

Q: A ball is thrown straight upward with a velocity of 16 m/s. How much time passes before the ball…

A: Given Initial velocity in vertical direction= u = 16 m/s motion is free fall motion Therefore…

Q: A hiker walks 9.5 miles to the east in 5.2 hours, then turns around and walks 3.1 miles to the west…

A: Answer:-  Given  Distance (S1) = 9.5 miles due to east  Time (t1) = 5.2 hours  Distance (S2) = 3.1…

Q: Gretchen runs the first 4.0 km of a race at 5.0 m/s. Then a stiff wind comes up, so she runs the…

A: Given: The first distance travel is d=4 km. The speed of gun is v=5 m/s. The second distance travel…

Q: A drop tower of an amusement park rises at 5 m/s and is 45 m above the ground when one of the riders…

A:

Q: A speedboat has a velocity of 48 kph as it comes out of a turn. It accelerates at the rate of 0.3…

A: Given: speed boat velocity v=48 kph = 13.33 m/s  Acceleration a = 0.3 m/s2

Q: An antelope moving with constant acceleration covers the distance 71.0 m between two points in time…

A: Solution: given that d = 71 m v = 15.2 m/s t = 7.6 s

Q: A ball is pushed downhill with an initial velocity of 3 m/s. The ball rolls down a hill with a…

A:

Q: It takes a race car 2.2 s to reach a speed of 100 km/h from rest, what is its average acceleration…

A:

Q: If a flea can jump straight up to a height of 0.44 m, what is its initial speed as it leaves the…

A: Given that:- Maximum height attained by a flea=0.44m

Q: To visit your friend, you first drive on a highway at 55 mi/h for 1.6 hours and then drive on a…

A: Given first velocity v1= 55 mi/h for time t1 = 1.6 hour another velocity v2= 20 mi/h for time t2 =…

Q: As part of an exercise program, a woman walks south at a speed of 2.00 m/s for 60.0 minutes. She…

A:

Q: Starting from the origin of some coordinate system, a chicken moves 2 m to the +x-direction for 2 s,…

A: Given: The chicken moves 2 m to the +x-direction for 2 s. The chicken moves 3 m to the +y-direction…

Q: Shane Zaragosa was driving a vehicle in Davao where he got distracted by a group of cute students of…

A:

Q: An electron is accelerated from rest to 3.0 × 106 m/s in 5.0 × 10−8 s. What distance does the…

A: Given, Initial velocity of electron u = 0 Final velocity of electron v = 3 x 106 m/s Time t = 5 x…

Q: A particle moves according to the equation y(t) =1.5t²+4t-1, where y is in meters and t is in…

A: