If the average velocity of a car is nonzero for some time interval does this mean that the instantaneous velocity is never zero?

Q: The acceleration of an object, starting from rest, is shown in the graph below. Other than at t = 0,…

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Q: A car starts from  rest and travels for 5.0 seconds with a  uniform acceleration of positive 1.5 m/s…

A: According to Newton's laws of motion , the final velocity and displacement of an object is…

Q: If a body starts from a standstill and proceeds to move with constant acceleration, how is the…

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Q: Why is a time interval always positive? If the average acceleration of a car is zero in a given time…

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Q: A car has an initial point P(1, 4, 3), when it moves it has a velocity and time that is greater than…

A: Since you have posted a question with more than 3 subparts, we will solve first three only as per…

Q: The magnitude of average velocity is always less than or equal to the average speed. Explain why?

A: Let us assume point A and B and with a straight line joining both of them separated by d distance.

Q: Assume that the brakes in your car create a constant deceleration,regardless of how fast you are…

A: (a)

Q: The average velocity of a particle over an interval of time is either smaller than or equal to the…

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Q: An automobile starting from rest speeds up to 40 m/s with a constant acceleration of 4 m/s2 runs at…

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Q: A motorboat starting from rest on a lake accelerates in a straight line at a constant rate of…

A: The second equation of motion is  s = u t + 05 a t2 where, s is the distance, t is the time, a is…

Q: If a bus travelling at 34 m/s is subjected to a steady deceleration of 8 m/s², how long will it take…

A: Given data:  Initial velocity (Vi) = 34 m/s Acceleration (a) = -8 m/s2  Final velocity (Vf) = 0 m/s…

Q: A car slows down with an acceleration whose magnitude increases linearly with time, starting with an…

A: Recall As acceleration magnitude increases linearly with time and speed decreases. So a=-Ct where C…

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: For which time period, is there a constant velocity of 10 m/s?

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Q: Due to an acceleration of 4 m/s2 the velocity of a body increases from 10 m/s to 30 m/s in a certain…

A: According to the Newton's laws of motion , the displacement is calculated by using the formula…

Q: Give an example where both the velocity and acceleration are negative

A: Velocity and acceleration

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

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Q: A body is thrown vertically upward with an initial velocity of 9m/s. Assuming that it falls freely…

A: Let say body is thrown vertically upward with initial velocity v0= 9 m/sand let us consider the body…

Q: a truck starts at origin from the rest at time t=0 with an accleration of Ax=(1.40 m/s^3)t.…

A: The expression for the velocity is,

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

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Q: a car starts from rest and travels 10 sec. with an acceleration of a-4-0.3t. then runs for 30…

A: Given : Acceleration for first 10s, a = 4.03 m/s2 Retardation after 30s, r = 3.125 m/s2

Q: In a rally a road is designed so that the minimum acceleration for a car to jump is 13.4 m/s². The…

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Q: When is the average velocity of an object equal to the instantaneous velocity? always only when the…

A: Required:  The condition when the average velocity of a moving object is equals to instantaneous…

Q: Your friend tells you that the time-dependence of their car's acceleration along a road is given by…

A: Given:-  The time-dependence of their car's acceleration along a road is given by a(t) = γt2+γt here…

Q: If a cat travelling at 40 m/s is subjected to a steady deceleration of 6 m/s², how long will it take…

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Q: If the velocity of the object is given as V=2t ®+3t² where x is in meters and t is in seconds. Find…

A: The instantaneous acceleration(a) of any object is given as the time rate of change of its velocity.…

Q: If you run from  x=0 m to x=25 m and back to your starting point in a time interval of  5s, what is…

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Q: A train is travelling down a straight track at 20 m/s when the engineer applies the brakes,…

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Q: Write down the relationship between acceleration, initial velocity and final velocity.

A: Acceleration can be defined as the rate of change of velocity.

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: Can a car that is traveling eastward velocity simultaneously have a westward acceleration? Give an…

A: Required :  Can a car that is travelling eastward velocity simultaneously have a westward…

Q: Does a car speedometer measure speed, velocity, or both?Explain

A: speedometer

Q: The brakes of a car can provide a maximum deceleration of around x m/s2. If a car is traveling 100 m…

A: using equations of motion  v2 -u2 = 2as therefore acceleration a = (v2 -u2)/2s   ----(1) also…

Q: If one object has a greater speed than a second object, does the first necessarily have a greater…

A: As we know that , Acceleration = a = v/tAs ,it is clear from the equation that acceleration depends…

Q: In a rally a road is designed so that the minimum acceleration for a car to jump is 12.8 m/s?. The…

A: Using kinematic equation, the expression for find length is v2=u2+2all=v22a

Q: A racing car has a uniform acceleration of 4 m s-2. What distance will it cover in 10 s after start?

A: Given : the car is initially at rest; initial velocity (u) = 0 ms-1 Acceleration (a) = 4 ms-2 Time…

Q: If a bus traveling at 49 m/s is subjected to a steady deceleration of 7 m/s2. How long will it take…

A: Given data :       Initial velocity  =  u        Deceleration  =  a        Final  velocity  = v…

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: Does a speedometer measure speed or velocity? Explain

A: Speed is scalar quantity. It has only magnitude. Velocity is vector quantity. It has magnitude and a…

Q: A ball is thrown straight upwards with a velocity of 15 m/s. It reaches the top of its flight then…

A: Average velocity = (Total displacement)/(Total time interval)

Q: Can an object have zero velocity and nonzero acceleration at the same time? Give examples

A: zero velocity and nonzero acceleration

Q: A racing car has a uniform acceleration of 4 m s - '2. What distance will it cover in 10 s after…

A: Given data :                   Initial velocity of the  car    =   u                    Acceleration…