(II) A baseball is hit almost straight up into the air with a speed of  25m/s Estimate (a) how high it goes, (b) how long it is in the air. (c) What factors make this an estimate?

Q: A world-class sprinter can burst out of the blocks to essentially top speed, 11.5 m/s, in the first…

A: Given data:  Initial velocity (Vi) = 0 m/s Final velocity (Vf) = 11.5 m/s Distance (d) = 15.0 m…

Q: Vhat must be the acceleration of a train in order for it to stop from 8.0 m/s in a distance of 37 m?…

A: initial velocity = V0= 8 m/s final velocity = V = 0 ( Stop ) distance = S = 37 m acceleration = a =…

Q: In order for an object to speed up, -_ must be in the same direction.

A: The object will accelerate if acceleration is in the same direction as velocity. The object will…

Q: Does the speedometerin your car measure average orinstantaneous velocity?

A:

Q: An object is thrown straight down from the top of a building 45.0 m tall building at 14.0 m/s, while…

A: Given data:  Height of building = 45.0 m/s Initial velocity of object at top (u1) = 14.0 m/s Initial…

Q: One of the fastest recorded pitches in major-league baseball, thrown by Billy Wagner in 2003, was…

A: The expression for find time taken by the ball to reach the home plate is t=dv Substitute values in…

Q: Two cars are traveling at constant speeds of 80 km / h and are on a straight road behind each other…

A:

Q: unction of time given by the (+) – (7 40 cm) cos [(A (t) 7 Δ0

A: Given values:- Mass,(m)=2.50 kg ----(1) Time,(t)=1 sec ----(2) Spring has displacement function as:-…

Q: Let the position of an obj Iqo t2 0. The velocity of th

A:

Q: With what velocity must a ball be thrown vertically upward in to order to rise to a height of 50ft?…

A: height = h = 50 ft = 15.24 m acceleration due to gravity g = 9.8 m/s2 final velocity = V = 0 m/s…

Q: One of the fastest recorded pitches in major-league baseball, thrown by Tim Lin cecum in 2009, was…

A: Write the given values. v0x=101 mi/hv0y=0x=60.5 ft

Q: Which is greater, an acceleration from 25km/h to 30km/h or one from 96km/h to 100km/h if both occur…

A: The acceleration from 25km/h to 30km/h is greater than the acceleration from 96km/h to 100km/h since…

Q: While driving a car at 90 km/h, how far do you move while your eyes shut for 0.50 s during a hard…

A:

Q: An unmarked police car traveling a constant 90 km/h is passed by a speeder. Precisely 1.00 s after…

A: Let up is the initial speed of the police car, us be the speed of the speeder, ap be the…

Q: Can you conclude that a car is not accelerating if its speedometer indicates a steady  60 km/h…

A: No, we cannot conclude. Velocity is a vector quantity ,it has both magnitude and direction.If…

Q: - (II) A child, who is 45 m from the bank of a river, is being carried helplessly downstream by the…

A:

Q: From a hot air balloon at an elevation of 310 m, a stone is dropped. Two seconds later another stone…

A: Height (h) = 310 m Velocity (u) = 75 m/s

Q: A stone thrown from the top of a building of height 60m with an initial velocity of 20 m/s straight…

A: Height of building h = 60 m Initial velocity u = 20 m/s Time taken to hit the ground t = ?

Q: An aircraft touches down at a speed of 200 km/hour and the brakes are applied. If the aircraft…

A: Given : u=200 km/hr=55.56 m/s v=20 km/hr=5.56 m/s a=-0.05v=-0.278 m/s2

Q: Gulls are often observed dropping clams and other shellfishfrom a height to the rocks below, as a…

A:

Q: An automobile accelerates uniformly from rest to 72 km/h and then the brakes are applied so that it…

A: Solution: Convert 75 km /h to m/s. 75km/h=75×10003600 m/s=20.83m/s. Calculate the time taken during…

Q: Suppose that the estimate of the maximum height that a player can throw a baseball is 40 feet. For…

A: Maximum height attained is 40 ft. Acceleration due to gravity is g= 32ft/s2.

Q: After a tennis match the players dash to the net to congratulateone another. If they both run with a…

A:

Q: A vertically projected object has zero velocity at its maximum height, but the acceleration is not…

A: When a body is projected in vertically upward direction it will be  in the influenced of Earth's…

Q: The initial speed of a car with good brakes is 30m/s. When brakes is applied, it stops in 2s.…

A: The formula for acceleration is  a=(v-u)/t  From the question, Initial velocity u=30 m/s  Final…

Q: If a speedometer of a car reads 40 km/he, does the car have constant velocity?

A: The velocity is a vector quantity. It has the speed with a direction.

Q: How long does it take an automobile traveling in the left lane of a highway at 65.0 km/h to overtake…

A:

Q: What isbthe average speed of a car driven for the 4hrs trip if it has an average soeed of 180.0 km/h…

A: The given data are listed below with suitable variables. Here, v1 denotes the average speed during…

Q: A long-distance runner has an average speed of 3.0 m/s during a race.  How far, in meters, does the…

A: Given ,        average speed = 3 m/s        time (t) 10 min

Q: When are you most aware of motion in a moving vehicle - When it si moving steadily in a straight…

A: You are most aware of the motion in a movig vehicle if it's changing its speed i,e, when it is…

Q: In a relay, a runner catches a baton at a running speed of 2 m/s and accelerates to 1.5 m/s2…

A:

Q: 18. (III) An automobile traveling 95 km/h overtakes a 1.10-km- long train traveling in the same…

A:

Q: A juggler usually throws balls vertically upwards to a certain height. How high should the balls be…

A: Write the equation of motion. S = ut + 0.5at² Need to determine the height should the balls be…

Q: Two cars leave from an intersection at the same time. Car ? travels south at 80 km/h, while car ?…

A: Given, the car A(assuming A) moving in the south direction at a speed of 80 Km/h, and car B travel…

Q: The locomotive, which accelerates steadily, drives past two consecutive ones kilometers of stones at…

A: Initial speed (u) = 15 kmhr Final speed (v) = 25 kmhr Distance moved (d) = 1 km

Q: If a car accelerates uniformly from rest to 15 m/s over a distance of 100m, the magnitude of the…

A: The expression for the acceleration from kinematics is,

Q: Let us throw a rock an upward angle of 30 degrees (30°) of the horizontal from the edge of our…

A:

Q: The head of a rattlesnake can accelerate at 50 m/s2 in striking a victim. If a car could do as well,…

A: The initial speed of the rattle snake is 0, the final speed is 100 km/h and the acceleration is…

Q: AT BOOK 2 t A trolley, while going down an inclined plane, has an acceleration of 2 cm s-2. What…

A: Given data :                 Acceleration    =    a                  Initial velocity  =  u…

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –