Q17. A ball is travelling in a straight line with a constant acceleration of 0.5 m/s². How much time does it take for its speed to gradually increase from 8.8 m/s to 13.0 m/s? Please pay attention: the numbers may change since they are randomized. Your answer must include 1 place after the decimal point, and proper Sl unit. Your Answer: Answer units

An object rotates about a fixed axis, and the angular position of a reference line on the object is given by 60=1.7e.43t where e is in radians and t is in seconds. Consider a point on the object that is 1.3 m from the axis of rotation. At t=1.3s, find the magnitude of the point's tangential component of acceleration? Round your answer to one decimal place.

The velocity of a particle traveling in a straight line is given by v= (6t – 3t2) m/s, where t is in seconds. Suppose that s = 0 when t = 0. Part C How far has the particle traveled during the 3.7-s time interval? Express your answer to three significant figures and include the appropriate units. HÀ ST = Value Units Submit Request Answer Part D What is the average speed of the particle for the time period given in previous part? Express your answer to three significant figures and include the appropriate units. Value Units Vave = Submit Request Answer

Q16. A 3.4-kip car speeds up uniformly from 0 to 57 mph in 39 seconds up the 15⁰ incline. If the engine has an efficiency of e = 0.73, what is the power input (in hp) when the car's speed reaches that final speed? (1 hp = 550 ft-lb/s) Please pay attention: the numbers may change since they are randomized. Your answer must include 1 place after the decimal point. Take g = 32.2 ft/s². Your Answer: Answer 15°