please write very clearly - provide key equations and units. 6. If an object starts from...
I have three questions I need assistance on please: 1. To make an object start moving on a surface with friction requires (a) less force than it takes to keep it moving on the surface at constant velocity (b) the same force as to keep it moving on the surface at constant velocity (c) more force than it takes to keep it moving on the surface at constant velocity (d) a force equal to the weight of the object (2)...
please write very clearly and provide key equations. 2. One mole of an ideal gas is placed into a container that has a volume of 1.5 x 10-3 m3. The absolute pressure of the gas is 1.55 x 105 Pa. What is the temperature of the gas? What is the average translational kinetic energy of a molecule of the gas? (R = 8.31 J/mol-K and k = 1.38 x 10-23 J/K)
An object starts from a stop, beginning to move in the positive direction at constant acceleration. It goes 6.7 m in 4.4 seconds. How fast (in m/s) is the object moving at the end of this time?
Assume an object with mass m = 4.64 kg starts at rest at the origin and experiences a net force Fnet of (2.74t? į + -7.65j) N. What is the y-component of this object's velocity vector at time t = 3.59 s?
1. What is the average velocity of an object that travels 30 km in 5 s? 2. How long would it take an object moving at 5 m/s to travel 60 m? 3. What is the acceleration of an object that goes from 3 m/s to 5 m/s in 8 s? 4. An object accelerates at 6 m/s2 for 4 s. If the object initially was moving at 6 m/s what is its final velocity? 5. What is the acceleration...
The acceleration of an object is given by the equation a(t) = 8, where a is in m/s2 and t is in seconds. The object is initially at rest at the origin. A constant force of 11 N acts on the object. What is the power delivered to the object at t = 5 s? 470 W 410. W 500. W 440. W 540. W
Please clearly show all work for full credit. A rocket-propelled car starts from rest and moves with constant acceleration a 5.5 m/s2 for 10 s until the fuel is exhausted. It then continues with constant velocity What distance does the car cover in 16 s? 1.
12) A sprinter running a 100 m race starts at rest and accelerates at constant acceleration A for 3.0 seconds and then maintains a constant velocity. In terms of A, what is the position of the runner after 3.0 seconds? What is A if the sprinter finishes the race in 12.0 seconds? 13) What force is needed to accelerate a 30.0 lb block at 2.2 m/s2? 14) What force is needed to stop a 1500 kg car in 40 m...
6) An object is originally moving and a constant acceleration of 8 m/s2 is applied to it +x direction which causes it stop after 2.0 seconds. What was the magnitude of the initial velocity in m/s?
A train has a length of 104 m and starts from rest with a constant acceleration at time t = 0 s. At this instant, a car just reaches the end of the train. The car is moving with a constant velocity. At a time t = 8.14 s, the car just reaches the front of the train. Ultimately, however, the train pulls ahead of the car, and at time t = 39.9 s, the car is again at the...