At t = 0 s, car 1 is locatedat x = 9 km to the north of Glades Rd. is at rest an
ID: 1760843 • Letter: A
Question
At t = 0 s, car 1 is locatedat x = 9 km to the north of Glades Rd. is at rest and has aconstant acceleration of 6.3 m/s2. While at t = 0s, car 2 is also located at x = 9 km to the north of Glades Rd ismoving at 32.1 m/s and has an acceleration of 2.9m/s2. Assuming both cars are driving in the samedirection (also to the north say), how long will it take car 1 tocatch car 2 in seconds?2.An object starts (t = 0 s) at x = 0 m and isoriginally moving in the negative direction at a magnitude of 12.6m/s. The entire time it is moving, an acceleration in thepositive x direction is applied to the object. Due to thisacceleration after 14.7 seconds the object has returned to x = 0m. Where will the object be in meters (at x = ____ m) another11 seconds after it has returned to x = 0 m if theacceleration does not change? 3.A person throws a baseballstraight up (in the y direction). The ball is in the air for3.23 seconds before it returns to the same height from where it wasinitially released. If the person when throwing the ball,generated a constant acceleration over a distance 1 m from rest,what is the acceleration produced by the person's arm inm/s2 At t = 0 s, car 1 is locatedat x = 9 km to the north of Glades Rd. is at rest and has aconstant acceleration of 6.3 m/s2. While at t = 0s, car 2 is also located at x = 9 km to the north of Glades Rd ismoving at 32.1 m/s and has an acceleration of 2.9m/s2. Assuming both cars are driving in the samedirection (also to the north say), how long will it take car 1 tocatch car 2 in seconds?
2.An object starts (t = 0 s) at x = 0 m and isoriginally moving in the negative direction at a magnitude of 12.6m/s. The entire time it is moving, an acceleration in thepositive x direction is applied to the object. Due to thisacceleration after 14.7 seconds the object has returned to x = 0m. Where will the object be in meters (at x = ____ m) another11 seconds after it has returned to x = 0 m if theacceleration does not change? 3.A person throws a baseballstraight up (in the y direction). The ball is in the air for3.23 seconds before it returns to the same height from where it wasinitially released. If the person when throwing the ball,generated a constant acceleration over a distance 1 m from rest,what is the acceleration produced by the person's arm inm/s2 2.An object starts (t = 0 s) at x = 0 m and isoriginally moving in the negative direction at a magnitude of 12.6m/s. The entire time it is moving, an acceleration in thepositive x direction is applied to the object. Due to thisacceleration after 14.7 seconds the object has returned to x = 0m. Where will the object be in meters (at x = ____ m) another11 seconds after it has returned to x = 0 m if theacceleration does not change? 3.A person throws a baseballstraight up (in the y direction). The ball is in the air for3.23 seconds before it returns to the same height from where it wasinitially released. If the person when throwing the ball,generated a constant acceleration over a distance 1 m from rest,what is the acceleration produced by the person's arm inm/s2
Explanation / Answer
Initial velocity (vi) of car 1 = 0 Acceleration (a1) of car 1 = 6.3 m/s2 Initial velocity (v2) of car 2= 32.1 m/s Acceleration (a2) of car2 =2.9 m/s2. At the time of overtaken the distances covered by both cars aresame. Now the distance covered by car1 is x1 = 0 +(1/2)a1t2 = (1/2)(6.3m/s2)t2 = 3.15t2 And the distance covered by car 2 is x2 = (32.1m/s)t +(1/2)(2.9m/s2)t2 = 32.1t + 1.45t2 Then 3.15t2 = 32.1t + 1.45t2 3.15t2 - 1.45t2 = 32.1t 1.7t = 32.1 t = 18.9s Distance traveled is x =(3.15m/s2)(18.9s)2 = 1123.1 m
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.