3-In a velocity time graph, velocity is proportional to time. It has got (a) Increasing acceleration (b) Decreasing acceleration (c) Zero acceleration (d) None of these.

Q: . A car accelerates uniformly from zero to 12 m/s2 in 8 seconds staring from rest. During the next 4…

A: Given: 1) In 8s, a car starts from rest and accelerates uniformly from 0 – 12 m/s2.(ii) During the…

Q: Look at the velocity-time graph given. 12 10 v (m/s) 4 2 TO 20 30 40 ii. 5-15 seconds t (s) iii.…

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Q: 3. The position of an object at time t is given by: r(t)=e¹i+e'j-t√2k, 0≤t<∞ a. Determine the…

A: 3)  a) r(t) = e-t i + et j - t√2 k  velocity = dr/dt = - e-t i + et j - √2 k

Q: 7. On the moon, the acceleration due to gravity is about -5 feet per second per second (compared…

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Q: Part (a) Enter an expression, in terms of defined quantities, for the car's speed just before the…

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Q: Enter an expression, in terms of defined quantities, for the car's speed just before the driver…

A: The constant acceleration af=1.51 m/s Time t1=20 sec

Q: 3 A skater increases her speed uniformly from 2.0 meters second to 7.0 meters second per per over a…

A: Let v be the final velocity of the skater, u be the initial velocity, a be the acceleration, and s…

Q: For an object in motion, is it possible for velocity to be constant while acceleration is zero?…

A: For an object in motion, is it possible for velocity to be constant while acceleration is zero?

Q: ii. A man walks on a straight road from his home to market 2.5 km away with a speed of 5 km/h.…

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Q: 1. Describe the velocity on the different slopes below. x (m) 100 80 D 60 40 20 t ( 50

A: As we know the velocity is defined as change in position per unit time. So the velocities at points…

Q: 3. The velocity of an object is proportional to elapsed time (a) always, (b) only for positive…

A: The expression that relates the velocity with acceleration is given by, ∆v=at On when the…

Q: In a test run, a certain car accelerates uniformly from zero to 19.8 m/s in 2.50 s. (a) What is the…

A: Given: Initial velocity , u = 0 Final velocity, v = 19.8 m/s Time , t = 2.50 s   To determine: (a)…

Q: A lock of Seagulls, of the family Laridae, have caught the prized "heaviest turkey ever carried by…

A: given that,Initial constant speed, u=15.5 m/s upwardAir drag, Fa=100 NTime taken to hit the water,…

Q: 70. A particle is moving along a straight line path according x' = at² + 2bt +c where 's' represents…

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Q: A car travels along a straight path begins to accelerate at a = (6t^2 – 4t) ft/s^2. At t = Os, its…

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Q: 1) You are late! You find yourself 10m directly behind the bus door as the bus pulls away with an…

A: Given:-  The distance between the bus and the person is d = 10 m  The bus accelerate with a = 1 m/s2…

Q: 2. The velocity time graph for two bodies A and B are shown. Then the acceleration of A and B are in…

A: Velocity vs time graph for two different bodies is provided. We know that , Acceleration is the rate…

Q: 11.A ball is dropped from rest from the top of a building of he At the same instant, a second ball…

A: Both have same velocity at top of building and acceleration is also same for both ball.So at any…

Q: + II P Question 3 (1 point) In a competition, two bicycle riders start from rest and accelerate with…

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Q: 9. This graph plots the position, as a function of time, of an object that was thrown upward and…

A: Solution: If the object is thrown upward, at the highest position the velocity is zero and when it…

Q: Aaron is driving twice as fast as Jim, 30 m/s when he sees the stop sign. Aaron's brakes also slow…

A: Given data:  Initial velocity (u) = 30 m/s Acceleration (a) = -5 m/s2 Final velocity (v) = 0 m/s…

Q: #9) An object is moving with a constant positive acceleration, which of the following graphs…

A: An object which moves in the positive direction has a positive velocity.If the object is speeding…

Q: A ball is fired downwards into a medium with an initial speed of 26 m/s. If it experiences a…

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Q: In the position formula, where t is time in seconds and x is position in meters, x(1)= r- -t -7t+4,…

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Q: 15 - Chapter 2- questn-26 The velocity-time graph of an object moving along the x-axis is given in…

A: The acceleration is the rate at which the velocity of the body changes. If velocity does not change…

Q: When can we be certain that the average velocity of an object is always equal to its instantaneous…

A: Given data:  The average velocity is equals to the instantaneous velocity Required: The condition…

Q: 78. Figure 2–50 shows the position vs. time graph for two bicy- cles, A and B. (a) Identify any…

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Q: 2. Jen accidentally drops her pingpong ball from a height of 4.5 feet. The ball bounces up and down.…

A: The length of the total path traveled is called distance.

Q: 2. An object has the following 5 velocities( m/s) in the x-y plane. In which one of the four cases,…

A: Given   there are 5 velocity ,and  the velocity for constant instatenous Acceleration is ,???

Q: In a test run, a certain car accelerates uniformly from zero to 16.8 m/s in 2.70 s. (a) What is the…

A: For part (a) Initial velocity is zero.  u = 0 Final velocity, v = 16.8 m/s Time, t = 2.70 cm   For…

Q: Two cars are heading towards one another. Car A is moving with an acceleration of aд = 14 m/s². Car…

A: Given: In this question, the given details are, Two cars are heading towards one another. Car A is…