An object in free fall experiences: A) Constant speed B) Increasing acceleration C) Decreasing acceleration D) Zero acceleration
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A: According to definition of acceleration , the change in velocity with time is called acceleration.…
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A: The acceleration of the particle is given by Where v = velocity of the particle
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A: Given: Some cases
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A: Since you have posted a question with multiple subparts we will solve the first three subparts for…
Q: Question 7 A stopped car accelerates to 25 metres per second in 5 seconds. What is the average…
A: Write the given values to the suitable variables.Here, u is the final speed, and t is the time.
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A: Negative acceleration decreases the speed of object . Therefore , correct options are :- An…
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A: (Note: The questions here given as 1. and 2. are same. So, here I am taking it as a single question…
Q: a car covers 40 m in 9.45 s while uniformly slowing down to a final velocity of 2.5 m/s a) find the…
A: Solution: Given that d = 40 m t = 9.45 s final velcity v =2.5 m/s
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Q: A firecracker is fired from rest and its gunpowder delivers a constant upward acceleration of 8 m/s?…
A: Given information: The acceleration upward provided by the gun powder (a) = 8 m/s2 The time for…
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A: Yes, it is possible when both velocity and acceleration are negative (in same direction) . Then…
Q: Which car has northward acceleration? A) a car traveling north at a constant speed. B) a car…
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A: Introduction: The acceleration of the object free-falling situation in the absence of the air…
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A: Let mass = m Initial radius of circular path R1=R angular velocity ω Initial angular momentum…
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A: Zero acceleration means there is no external force on object. So, when an object moves with constant…
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Q: Question 6 The next few questions challenge you to figure out the acceleration due to gravity ( g)…
A: Given: The initial speed of the object is 0 m/s. The height of the object from the ground is 68.4 m.…
Q: An airplane heads due north at 120 m/s through a 30 m/s cross wind blowing from east to west. The…
A: here, velocity of airplane(VPA) = 120 m/s due to north the velocity of air (VA) = 30 m/s let…
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- If a car has negative acceleration does this mean the car must be slowing down? Explain.10 The engines of a rocket sitting on the ground fire to accelerate the rocket at 3.5 m/s² until it reaches an altitude of 1.2 km. At that point the engines fail and the rocket is in free fall. What height does the rocket reach in m? Assume a constant acceleration of gravity of 9.8 m/s² even at these high altitudes. Enter answer hereA rock is falling from the top of a cliff. Which of the following statements is true? a. Speed of the rock decreases and its acceleration remains constant O b. Speed of the rock increases and its acceleration remains constant Oc. Speed of the rock remains constant and its acceleration increases O d. Speed and acceleration of the rock remains constant
- Which of the following describes an object which is NOT speeding up? a) v = -1 m/s, a = -8 m/s^2 b) v = 3 m/s, a = 4 m/s^2 c) v = 7 m/s, a = -2 m/s^2 d) v = 0 m/s, a = -6 m/s^2An object moving 30 m/s has an acceleration of -2.0 m/s^2 its velocity 1. Increases 2. Decreases A child is playing with a tennis ball. The ball thrown upward reaches its maximum height and then falls back in the child's hand. If the air resistance is negligible the acceleration of the tennis ball is 1. the same up and down but zero at the top 2. less on the way down than on the way up 3. the same at all points in the motion 4. less on the way up than on the way downA toy train rolling on a straight stretch of tracks, initially going 0.31 m/s slows uniformly to 0.14 m/s in 17 s. It then speeds up with a constant acceleration of magnitude 0.068 m/s2 over a distance of 4.2 m. ii) What is its final speed after speeding up for the last 4.2 m
- Can an object have an acceleration of zero and a velocity that is not zero? Explain why or give an example. Can an object have a velocity of zero and an acceleration that is not zero? Explain why or give an example.acceleration a(t) for two full periods. 3 2 1 -1 -2 -3 -4 -5 x(t) a(t)What is the ACCELERATION of an object that is thrown upwards when it reaches the highestpoint?. EXPLAIN.