When an object is released from rest and falls in the absence of friction, which of the following is true concerning its motion? A. Both its acceleration and its velocity are constant B. Neither its acceleration nor its velocity is constant C. Its acceleration is constant D. Its velocity is constant

Q: A walrus’s total displacement during a swim is Northwest. The walrus’s ___ must also be Northwest.…

A:

Q: A train traveling at vo = 20.0 m/s begins to brake by applying a velocity-dependent instantaneous…

A: Write the expression for the velocity.

Q: For an object that is moving along a straight path, the acceleration is Select an answer and submit.…

A:

Q: 2. A body moves along a horizontal line according to s = t3 - 9t² + 24t. Find the total distance…

A: Displacement, s = t³ - 9t² + 24t Distance traveled in the first 5 seconds of the motion = ?

Q: 4. The driver of a car, which is initially at rest at the top A of the grade, releases the brakes…

A: The acceleration of the car is given by a=3.21-0.008v2 To find the velocity vB at the bottom B of…

Q: A body falls freely downward. Neglecting air resistance а. Its speed decreases while moving…

A:

Q: A fish swimming in a horizontal plane has velocity = (4.00 i + 1.00 j) After the fish swims with…

A:

Q: Suppose you are playing hockey on a new-age ice surface on which there is no friction between the…

A: Given data- You are playing hockey on a new age ice surface on which there is no friction friction…

Q: A fish swimming in a horizontal plane has velocity = (4.00 i + 1.00 j) m/s at a point in the ocean…

A: Given data, The initial velocity vector of the fishvi⇀=4i^+j^ m/s The final velocity vector of the…

Q: If the final velocity of an object is less than its initial velocity, then a. its acceleration will…

A: To find: If the final velocity is less than the initial velocity

Q: The velocity-time (v-t) graph of an object is a straight line parallel to the x-axis. Then the…

A: We know velocity is defined as displacement per unit time. Where acceleration is defined as velocity…

Q: A rock is falling from the top of a cliff. Which of the following statements is true? a. Speed of…

A: To determine  Correct statement

Q: Which of the following statements is true of a ball that is thrown upward, reaches its highest…

A: According to the question we need to find true and false condition for the given parts.

Q: An elevator is traveling downward at decreasing speed. If up as chosen as the positive direction,…

A: The elevator has no acceleration, when standing still, or moving with constant speed. The elevator…

Q: A rock of mass 49 kg accidentally breaks loose from the edge of a cliff and falls straight down. The…

A: The mass m=49kg  To find the magnitude of the acceleration of the rock

Q: A rock is falling from the top of a cliff. Which of the following statements is true? a. Speed of…

A: Dear student When there is any particle falling freely under gravity, the acceleration on it acts…

Q: choose the correct statement about acceleration of the object

A: Newton's Second Law of motion According to Newton's Second Law of motion, the rate of change of…

Q: Describe the motion of a person not wearing a seat belt if the car stops suddenly. A The person will…

A: Given in question: A person is moving in the car without wearing a seatbelt. Solution: Step1 - Here…

Q: A 50 kg woman gets on an elevator at the ground floor [0th floor] of a skyscraper and pushes a…

A: Given, mass of woman is m=50kg the initial position of the elevator is on ground   According to the…

Q: Answer part B). What acceleration should the red object have if it is to collide with the blue…

A: Using equation of motion and considering the final velocity of the Red object to be zero.

Q: An object is not accelerated if

A:

Q: A rock is falling from the top of a cliff. Which of the following statements is true? O a. Speed of…

A: A rock is falling from the top of the cliff so it is a case of free fall. So acceleration in this…

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: The brakes of a car whose initial velocity is 30 m/s are applied, and the car receives an…

A: (Note: The questions here given as 1. and 2. are same. So, here I am taking it as a single question…

Q: An aircraft is initially moving with a velocity of +7.0 m/s and travels for 8.0 s with a uniform…

A:

Q: Which of the following is wrong for a freely falling object. X a. If an object is dropped from rest…

A: Need to select: Wrong statement about freely falling object  Consider the acceleration due to…

Q: A car starts from rest and after 6 seconds it is moving at 42 m/s. What is the car's average…

A: Given Data: The initial velocity of a car is, u=0 m/s The time taken by a car to move from the rest…

Q: A car is driving along a circular track of diameter d = 0.75 km at a constant speed of v = 22 m/s.…

A:

Q: Assume that an MX missile goes from rest to a suborbital velocity of 8.50 km/s in 70.0 s (the actual…

A: First, we need to convert the velocity from kilometers per second (km/s) to meters per second (m/s)…

Q: The direction of acceleration _________. * Choose    a. is always the same as that of the…

A: Acceleration is defined as rate of change of velocity. S.I. unit of acceleration is m/s2…

Q: 9. A carnival attraction tests your strength by how far in the air you can drive a weight with a…

A:

Q: An apple is falling from an apple tree. Which of the following statements is true? a. Speed and…

A:

Q: 3. Toy Train: A toy train pushed forward and released at x0=2.0 m with a speed of 2 m/s. It rolls at…

A:

Q: Cessna Marie throws a ball straight up. Ignoring air resistance, which of the following statements…

A:

Q: A car has a velocity of 30m/s to the right. The driver applies the brakes, slowing the car to a stop…

A:

Q: A spittlebug called the froghopper (Philaenus spumarius) is believed to be the best jumper in the…

A:

Q: A cargo ship makes a short run between two docks: one in Mock Town. The other is in Logue Town. As…

A:

Q: .A truck starts from rest at t = 0 and reaches a final speed v at time t. Which of the following…

A: .A truck starts from rest at t = 0 and reaches a final speed v at time t. Which of the following…

Q: A stone is thrown vertically upwards, reaches a highest point, and returns to the ground. When the…

A: Acceleration acting on the stone,  acceleration due to gravity

Q: What is correct about the two-dimensional free fall of a ball tossed up at some angle? a. When the…

A: Answer:   As per the given statement,   a) When the projectile comes back to its initial height, its…

Q: A body falls freely from rest. Find its acceleration. Determine the distance it falls in 3 s. Look…

A:

Q: An airplane needs to gain an acceleration of 0.79  m/s2  to take off on a  2000 m runway, what is…

A: Given data:  Initial velocity (V0) = 0 m/s Acceleration (a) = 0.79 m/s2 Distance traveled (Δx) =…

Q: A body falls vertically from the height h= 125 meters with the initial velocity equal to zero. What…

A: h = 125 m v0 = 0 m/s a = g = 10 m/s2 d' = ?