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: If a flea can jump straight up to a height of 0.670 m, how long is it in the air

A: Take the upward direction to be positive. The equation of motion is given by, vy2=v0,y2+2ayΔy Here,…

Q: On average, an eye blink lasts about 100 ms. How far does a fighter jet travel during a pilot's…

A: Given data:  Time (t) = 100 ms = 0.100 s Average velocity (v) = 3300 km/h Required: Distance (d)

Q: The minimum distance required to stop a car moving at 35.0 mi/h is 40.0 ſt. Whhat is the minimum…

A: Recall Vf2=Vi2+2ad Here Vf=0 in both cases.

Q: A ball is thrown vertically downward with an initial velocity of 5.6 m/s. How far (distance in…

A: From the question it is given that Initial velocity of ball u = 5.6 m/s Time taken: t = 3.78 sec

Q: An airplane lands on a runway with a velocity of 150 m/s. How far will it travel until it stops if…

A: Let us suppose there is an airplane lands on a runway with a  initial velocity (u) that is 150…

Q: If a car moves at the rate of 30mi/h for 6 min, then 60mi/h for 10 min, and finally 5 min/h for 3…

A: Given:  First 6 min, velocity = 30 mi/hr Next 10 min, velocity = 60 mi/hr Final 3 min, velocity = 5…

Q: A football is kicked 40 m. If the ball is in the air for 4 s, with what initial speed was it kicked?

A: Answer             22.004m/s

Q: stone is thrown vertically upward from the ground with an initial velocity of 64 ft/sec. How high…

A: Given  Initial velocity = vi = 64 ft/sec  acceleration due to gravity is  = g =−32 ft/sec^2

Q: You drop an object from a certain height, and it takes 1.00 s to reach the ground. (Ignore air…

A:

Q: Suppose a car merges into freeway traffic on a 200-m-long ramp. If its initial velocity is 10.0 m/s…

A: Ramp length=200 m Initial velocity=10.0 m/s Acceleration=2 m/s2 Let "t" be the climbing time on a…

Q: How long a car will take to cover 25 m wide intersection, if the car accelerates from rest at a…

A:

Q: An automobile travelling 95km/h overtakes a 1.10km long train traveling in the same direction on a…

A: The relative speed of the car with respect to the train can be obtained as…

Q: From the very top of the new One World Trade Center Tower in New York City, an object would take…

A: Time taken by object to hit ground is 10.4 Gravity is given as 9.8 m/s2 Height fall  h= ut-gt22 h =…

Q: In a slap shot a hockey player accelerates the puck from a velocity of 5.00 m/s to 40.0 m/s in the…

A: Distance moved by the puck is,

Q: Suppose a car merges into freeway traffic on a 200-m-long ramp. If its initial velocity is 10.0 m/s…

A:

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: If a flea can jump straight up to a height of 0.670, how long is it in the air?

A:

Q: A baseball is hit with a bat and, as a result, its direction is completely reversed and its speed is…

A: Given  time of contact t=0.33s Initial speed V final speed -2V mass be m

Q: An Olympic long jumper is capable of jumping 8.0 m. Assuming his horizontal speed is 9 m/s as he…

A: Given = distance= d= 8m  Speed horizontal= 9 m/s  Time= t= ??

Q: If a flea can jump straight up to a height of 0.44 m, how long is it in the air?

A: when the flea jump straight upward its acceleration a = -g = -9.8 m/s2 total distance to travel s =h…

Q: During a hard sneeze, your eyes might shut for 0.31 s. If you are driving a car at 81 km/h during…

A: Given data The time interval of a hard sneeze is given as t = 0.31 s. The speed of the car is given…

Q: To determine the height of a bridge above the water, a person drops a stone and measures the time it…

A: Write the time taken by the stone to reach on the surface of the water. t=4 s   Write the initial…

Q: In a slap shot a hockey player accelerates the puck from a velocity of 10.00 m/s to 50.0 m/s in the…

A:

Q: To stop the car, a car leaves a skid marks 200m long on the highway. Assuming a deceleration of…

A: Given:Initial velocity, Vi = 0m/s Acceleration, a = 7.5 m/s²Distance,d=200 mFind Final velocity,…

Q: When a bullet is fired into a sand bank, its retardation is assumed equal to the square root of its…

A: -a=√vi given vi

Q: A car is driving at 60 mph downhill. What magnitude of acceleration does it need to have to come to…

A:

Q: Suppose a car merges into freeway traffic on a 200-m-long ramp. If its initial velocity is 10.0 m/s…

A: Given Length of the ramp/the distance the car has to travel  s=200m Initial velocity of the car u=10…

Q: A rock is dropped from a 154-m-high cliff. How long does it take to fall (a) the first 77.0 m and…

A:

Q: Does a car’s odometer measure distance traveled or displacement?

A:

Q: An object is movine from 13m/s to 20km/h, and it takes that object 3 minutes, what is the objects…

A:

Q: The height of a helicopter above the ground is given by h= 3.0t³, where h is in meters and t is in…

A: Given Data: The height is, h = 3t3 m. The time is, t = 2 s. At 2 s, the height is,  h=3×2 s3   =24…

Q: You drive a car 1500 ft to the east, then 2500 ft to the north. Ifthe trip took 3.0 minutes, what…

A:

Q: An object has an initial velocity of 15 m/s. How long must it accelerate at a constant rate of 3 m/s…

A: From equation of kinematics,  V = U + at where, V = final velocity ; U = initial velocity a =…

Q: The height of a helicopter above the ground is given by h = 3.15t^3, where h is in meters and t is…

A: Finding the time taken by the mailbag to reach the ground.Given information:The expression of height…

Q: The acceleration due to gravity on the Moon is about onesixth what it is on Earth. If an object is…

A:

Q: A dog running in an open field has components of velocity v,= 2.5 m/s and v, = -1.8 m/s at t, = 10.0…

A: Given : v1x = 2.5 m/s v1y = -1.8 m/s t1 = 10 s v2x = -3.5 m/s v2y = 2.2 m/s t2 = 30 s

Q: A ball is thrown up into the air with a speed of 22 m/s. How high does it go and how long is it in…

A: when the balls reached at the highest point final velocity=v =0. If a ball is thrown in air and if…

Q: The height of a helicopter above the ground is given by h = 3.00t3, where h is in meters and t is in…

A:

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: A certain juggler usually tosses balls vertically to a height H.To what height must they be tossed…

A: Given: height = H

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: How long does a ball stay in the air if it is 20m/s and it is thrown straight up?

A: Given,

Q: A car racing in a 420m drag race starts from rest and accelerates uniformly to 34.0m/s in the first…

A: Given:length of the drag race (s) = 420 mInitial velocity of the car (u) = 0 m/sfinal velocity of…

Q: In college softball, the distance from the pitcher’s mound to the batter is 43 feet. If the ball…

A: Write the variable with given values.

Q: In a 5.00 km race, one runner runs at a steady 12.0 km/h and another runs at 14.5 km/h. How long…

A: s = 5 km = 5000 mv1 = 12 kmhr = 3.33 m/sv2 = 14.5 kmhr = 4.03 m/s Since the runners are running at a…

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 –