phy1

An object is moving at constant speed. Which statement MUST be true? And why? A. The acceleration of the object must be zero B. The direction of the object is not changing C. The velocity of the object is constant D. All of the above E. None of the above

You pull on a string with a horizontal force of magnitude F = 59 N that is attached to a block of mass m = 6.3 kg, then to the axle of a solid cylinder of mass mc = 5.9 kg and radius r = 0.4 m, then to a spring of spring constant k = 145 N/m. This is all done on an inclined plane where there is friction (μ = 0.63 and μ = 0.36), and the incline angle is 0 = 28 degrees. Everything starts at rest, and the spring is unstretched. The block slides down the plane, the cylinder rolls down the plane (without slipping), and the spring stretches. k bllllllll b 0 Fyb

Which of the following statement is not correct? O a. A lift going down in a gold mine cannot have constant acceleration in the entire Journey. O b. A bus going down the valley may have variable acceleration. O c. In a cricket match, the ball does not move with constant acceleration. O d. A body falling freely under the force of gravity is an example of motion under variable acceleration.

question a,b,c ty For any vector quantity, be sure to always include the magnitude and direction(teacher asked)

A particle is undergoing motion in the yz-plane means eliminate all terms involving j and k.. O True O False

Which of the following law states "When two moving bodies collide with each other, their velocity of separation bears a constant ratio to their velocity of approach"? Select one: O Newton's Second Law of Motion Newton's Law of Collision of Elastic bodies Newton's First Law of Motion O Law of conservation of Momentum

Please need help. Clear explanation or answer. Use the picture to answer 1,2,3,4, 1- The direction of the IM (impending motion) of the Wedge is _____degrees 2- Consider the FBD of the Wedge:   The direction of N2 (normal force on Surface-2) is _____degrees. 3- The magnitude of N2 (normal force on Surface-2) is _____N. 4- The magnitude of F2 (friction force on Surface-2) is _____N.

can you please write it with a good handwriting thank you because i cant read bad handwrittings sorry.

4.)A cannonball is launched vertically upwards at 50 m/s then it returns to the ground after some time with a = 9.81 . Find the maximum height, the time it takes to return to the ground, and the velocity at which it returns to the ground. 127.42 m, 10.19 seconds, -50 m/s

Please and thank you

Question In the image. Please explain with steps to explain how you got the answer.

Which of these statements is (are) true? An object can have zero acceleration and be at rest. An object can have nonzero acceleration and be at rest. An object can have zero acceleration and be in motion.