A car accelerates at a constant rate of 1.83 m/s along a flat straight road. The force acting on the car is 1.870 kN. The car accelerates from rest for 16 s. Calculate the speed of the car after 16 s. O 10.2 m/s O 18.4 m/s O 29 3 m/s O 25.55 m/s

A car moves along a horizontal road with constant velocity VO,z i (44 m/s) i Vo = until it encounters a smooth inclined hill. It climbs the hill with constant velocity Ủ1 = V1,z î + V1‚y Ĵ = (38 m/s)i + (4.2 m/s) j as indicated in the figure. The period of time during which the car changes its velocity is At = 3.6 s. Y Part (a) Enter a symbolic expression for the average acceleration vector of the car during the given time period in terms of the variables in the problem and the standard unit vectors. Part (b) What is the magnitude, in meters per squared second, of the car's acceleration during the given time period.

You place a crate of mass 43.2 kg on a frictionless 4.99-meter-long incline. You release the crate from rest, and it begins to slide down, eventually reaching the bottom 1.99 s after you released it. What is the angle of the incline?     17.9 degrees     14.9 degrees     20.9 degrees     25.1 degrees

9. A 100 kg man gets in an elevator on the 10th floor. He stands still on a scale, which is placed on the floor of the elevator, before the doors close, and the scale reads a value equal to his weight (the largest force of gravity on him). The doors close, and the elevator starts moving downward toward the 1st floor. The elevator speeds up until it reaches the 8th floor, at which point the elevator travels at a constant velocity, which it maintains until it reaches the 3rd floor, at which point it starts slowing down at a constant rate and stops by the time it reaches the 1st floor. Rank from greatest to least, the following quantities at following floors: 2nd, 5th, 9th. Explain your answers. (a) His mass (the question is asking for a ranking of the person's mass on the 2nd floor vs. the mass on the 5th floor vs. the mass on the 9th floor.) (b) His weight (c) Magnitude of normal force he exerts on the scale (d) Magnitude of normal force he exerts on the elevator floor.

You place a crate of mass 36.4 kg on a frictionless 3.71-meter-long incline. You release the crate from rest, and it begins to slide down, eventually reaching the bottom 1.56 s after you released it. What is the angle of the incline?     40.8 degrees     22.7 degrees     18.1 degrees     27.2 degrees

An object starting form rest attains a speed of 12.0 m/s in 7.0 s. Find the total distance traveled in 5.0 s. 5.0 m 38 m 41 m The answer is not found among the choices. O 21 m

A rocket is launched at an angle of 60.0° above the horizontal with an initial speed of 95 m/s. It moves for 3.00 s along its initial line of motion with an acceleration of 32.0 m/s2. At this time its engines fail and the rocket proceeds to move as a free body. a. Find the maximum altitude reached by the rocket. _______m b. Find its total time of flight. _______ s c. Find its horizontal range _______ m

If the bushwalker takes 5 hours to complete the entire walk of 22 km including a 1.5 h rest, the average walking velocity of the bushwalker over the 5 hours is closest to A       2.19 km/h B       8.75 km/h C       0 km/h D       4.37 km/h E       2.69 km/h