The speed of a bullet is measured to be 640 m/s as the bullet emerges from a barrel of length 1.20 m.Assuming constant acceleration, find the time that the bullet spends in the barrel after it is fired.

Q: If a bus travelling at 48 m/s is subjected to a steady deceleration of 5 m/s², how long will it take…

A: Given data :                      Deceleration     =     a                      Final velocity     =…

Q: An airplane needs to reach a velocity of 203.0 kan/h to take off. On a 2000m runway, what is the…

A:

Q: For what kinds of motion are the instantaneous and average velocities equal?

A: instantaneous velocity and average velocity

Q: How far a car travels in one second with initial speed of 10 m/s and acceleration of 1 ?

A: Write the given values of the problem- Time(t) t=1 second initial speed(u) u=10 m/s Acceleration(a)…

Q: What is the final velocity of a freight train that accelerates at a rate of 0.0852 m/s for 8.25 min,…

A:

Q: A car stars from rest and has a constant acceleration of 3 ft/s?. Find the average velocity during…

A: vi = 0 ft/s a = 3 ft/s2 t = 10 s vavg = ?

Q: A train approaches a small town with a constant velocity of +28.6 m/s. The operator applies 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: A jet plane is launched from a catapult on an aircraft carrier. In 2.0 s it reaches a speed of 42…

A: Given : Time (t) = 2 seconds Final speed (vf) = 42 m/s Initial speed (vi) = 0 m/s

Q: If a bus travelling at 38 m/s is subjected to a steady deceleration of 6 m/s2, how long will it take…

A: We know thatv=u+atWherev=final velocityu=initial velocitya=accelerationt=time taken

Q: A car is moving along a straight line with an initial velocity of 11.80 m/s. Its acceleration is…

A:

Q: A soccer player kicks a rock horizontally off a 36.1 m high cliff into a pool of water. If the…

A: It is given that,

Q: A car slows down (or speeds up) from a speed of 43 m/s to a speed of 26.9 m/s over a distance of 565…

A: Given,Initial speed of the car, vi = 43 m/sfinal speed of the car, vf = 26.9 m/sdistance, d = 565…

Q: A car is traveling at 60km/h when the brakes are fully applied, producing a constant deceleration of…

A:

Q: An object starts from rest and undergoes uniform acceleration. During the first second it travels 5…

A:

Q: If a car travelling at 28 m/s is subjected to a steady deceleration of 2 m/s², how long will it take…

A:

Q: If a car travelling at 44 m/s is subjected to a steady deceleration of 6 m/s², how long will it take…

A:

Q: The driver of a car traveling at 110km/h slams on the brakes so that the car undergoes a constant…

A: Given: The initial speed of the car is 110 km/h. The time taken by the car is 4.5 s.

Q: A vehicle is running with uniform acceleration covers 450 m in a 5 second interval and further it…

A: Given data as per question initial distance  =  450m time  =   5s

Q: Two trains travel in the opposite direction, leaving each of the opposite stations which call…

A: Let the two trains meet after time t. Thus, after time, t, the total distance travelled by the two…

Q: A race car traveling at 23 m / s accelerates uniformly to a speed of 10 m / s in an interval of 8.5…

A: Calculate the deacceleration of the car by using the equation of motion. Final speedv=Initial…

Q: car traveling with the initial speed of 30 m/s and traveling a distance 450 m with the final…

A: A car initial speed u = 30 m/s  The final speed of the car is v = 80 m/s  The distance travel by the…

Q: A dragster travels 1/4 mi in 6.7 s. Assuming that acceleration is constant and the dragster is…

A: Given Information:Initial velocity u = 0Distance travelled s = (1/4) miles = 402.336 meters.1 mile =…

Q: If a car travelling at 66 m/s is subjected to a steady deceleration of 7 m/s², how long will it take…

A: Given data :                       Initial velocity    =    u                       Final  velocity…

Q: A motorist travels for 2 h at 80 km/h and 2 h at 100 km/h. What is her average speed for the trip? *

A: A motorist travels for 2 h at 80 km/h and 2 h at 100 km/h. What is her average speed for the trip?

Q: An object starts from rest and undergoes uniform acceleration. During the first second it travels 5…

A:

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

A:

Q: Find the value of acceleration Initial velocity=0 m/s Final velocity=10 m/s time=2 s

A: Given data:  Initial velocity (u) = 0 m/s Final velocity (v) = 10 m/s Time (t) = 2 s Required:…

Q: A train starts from rest and accelerates uniformly to achieve a velocity of 20 m per sec in 10 sec.…

A: Given,

Q: During astronaut training, the person rides a simulated rocket, accelerating from rest to maximum…

A: X=16.34

Q: A particle traveling on a line has constant acceleration a(t)=−2/5. If s(1) = 3 and s(6) = 8, find…

A:

Q: A jet plane is launched from a catapult on an aircraft carrier. In 2.0 s it reaches a speed of 42…

A:

Q: A car accelerates uniformly from rest to a speed of 40 mi/h in 10 seconds find the distance the car…

A: Given: initial speed of car u = 0 m/sfinal speed of car v= 40 mi/hr =  17.88 m/stime t =10 sec

Q: If a car travelling at 46 m/s is subjected to a steady deceleration of 12 m/s², how long will it…

A: Given data :                        Final velocity     =    v                        Initial…

Q: The runway of an airport in Oman has been designed such that the lowest acceleration for a plane to…

A: Write the given values of the problem- Acceleration(a) a=14.3 ms2 speed(v) v=54.9 m/s u=0

Q: Velocity and acceleration of a particle at time t = 0 are u = (2î + 3j) m/s and a = (4î +2j) m/s?…

A:

Q: A crate slides across a frictionless horizontal surface with constant acceleration 4.15 m/s2 and…

A: By using equation of kinematics v2 = u2 + 2S a) initial velocity u = 5.00 m/s final velocity v =10.0…

Q: If a car is traveling with a constant velocity, what can you say about its acceleration?

A: Given data:  Velocity of car is constant.

Q: An object starts from rest and undergoes uniform acceleration. During the first second it travels…

A:

Q: A car accelerates uniformly from rest to a speed of 20.0 m/s in 12.0 seconds. Find  a) the…

A: Let's use the kinematic equation in terms of initial, final velocities, time, and acceleration.…

Q: A car traveling in a straight line with an initial velocity of 10 m/s undergoes a constant…

A: Use the kinematic equation in terms of initial velocity, time, and distance covered. ∆x=vit+12at2

Q: If a bus travelling at 20 m/s is subjected to a steady deceleration of 5 m/s, how long will it take…

A:

Q: During a braking test, a car is brought to rest beginning from an initial speed of 52 mi/hr in a…

A:

Q: The body, with an initial speed of 2 m/s, began to slide along an inclined plane. For l0s, it passes…

A:

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.