A car is speed at a constant 24 m/sec in a school zone. A police car starts from rest just as the speeder passes it and accelerates at a constant rate of 5.4 m/sec2.
Also, the cop catches the car at t=8.89 s and v=48.
How fast is the police car going when it is 27 m behind the speeding car...
Ok I'm not sure if this question belongs here, but I am learning this in a CS class and the people at math.stack wouldn't know about this stuff, so here it goes. I'm having a hard time understanding how to find the don't-care values in a Kmap. What does it even mean? If I have a boolean...
Three identical balls are thrown from the edge of a cliff, each with the same initial speed. Ball 1 is thrown directly upward. Ball 2 is thrown directly downward. Ball 3 is thrown horizontally. Which of the following statements correctly characterizes the relative kinetic energies (K) of the...
The magnitude of the velocity of an object must change if the magnitude of its acceleration is a constant. True or false?
I chose true, however the correct answer is false. Here's my reasoning: If acceleration is constant, that means velocity is linear. If velocity is linear, that means it's...
Refer to number 6. This is the one I'm stuck on. So angular momentum is conserved right, so initial angular momentum is equal to final angular momentum. Initial is 7.87 so final must be 7.87, right? And so average torque is just change in angular momentum / change in time, so 0/7=0. What am I...
We have to analyze this video:
Givens:
1) An applied net torque due to the wind on the windmill is equal to 1500 N*m.
2) Each (of the 3) propeller props weighs approximately 45 Kg and has a Moment of Inertial equal to about 65% of that of a rod of the same mass being spun about its...
I don't get it. It should just be the sum of all the forces in the y direction, and that's simply the Normal force and the y component of mg, which is mgcos30?
Whats wrong with my answer? I've tried just about everything, but its not accepting it. I've tried +N too, even though I think what I have in there should be right.
A 2.4 kg block with a kinetic energy of 48 J slides on a horizontal frictionless table and collides with a second block. The second block is made of a different material and is initially at rest. The two blocks stick together and after the collision have a kinetic energy of 36 J. Find the mass...