The figure gives the acceleration a versus time t for a particle moving along an x...

Transcribed Image Text:

The figure gives the acceleration a versus time t for a particle moving along an x axis. The a-axis scale is set by a = 12.0 m/s. At t = -2.0 s, the particle's velocity is 7.00 m/s. What is its velocity at t= 6.0s? a (m/s) as Number i Units -2 0 2 4 6t(s) Current Attempt in Progress An electric vehicle starts from rest and accelerates at a rate of 2.2 m/s in a straight line until it reaches a speed of 17 m/s. The vehicle then slows at a constant rate of 1.2 m/s until it stops. (a) How much time elapses from start to stop? (b) How far does the vehicle move from start to stop? (a) Number i Units (b) Number i Units Current Attempt in Progress A hot-air balloon is ascending at the rate of 13 m/s and is 60 m above the ground when a package is dropped over the side. (a) How long does the package take to reach the ground? (b) With what speed does it hit the ground? (a) Number i Units (b) Number i Units Current Attempt in Progress Suppose a rocket ship in deep space moves with constant acceleration equal to 9.80 m/s, which gives the illusion of normal gravity during the flight. (a) If it starts from rest, how long will it take to acquire a speed 10% that of light, which travels at 3.0 108 m/s? (b) How far will it travel in so doing? (a) Number i Units (b) Number i Units An automobile driver increasing the speed at a constant rate from 46 km/h to 60 km/h in 0.74 min. A bicycle rider speeds up at a constant rate from rest to 14 km/h in 0.74 min. What are the magnitudes of (a) the driver's acceleration and (b) the rider's acceleration? (a) Number i Units (b) Number i Units The figure gives the acceleration a versus time t for a particle moving along an x axis. The a-axis scale is set by a = 12.0 m/s. At t = -2.0 s, the particle's velocity is 7.00 m/s. What is its velocity at t= 6.0s? a (m/s) as Number i Units -2 0 2 4 6t(s) Current Attempt in Progress An electric vehicle starts from rest and accelerates at a rate of 2.2 m/s in a straight line until it reaches a speed of 17 m/s. The vehicle then slows at a constant rate of 1.2 m/s until it stops. (a) How much time elapses from start to stop? (b) How far does the vehicle move from start to stop? (a) Number i Units (b) Number i Units Current Attempt in Progress A hot-air balloon is ascending at the rate of 13 m/s and is 60 m above the ground when a package is dropped over the side. (a) How long does the package take to reach the ground? (b) With what speed does it hit the ground? (a) Number i Units (b) Number i Units Current Attempt in Progress Suppose a rocket ship in deep space moves with constant acceleration equal to 9.80 m/s, which gives the illusion of normal gravity during the flight. (a) If it starts from rest, how long will it take to acquire a speed 10% that of light, which travels at 3.0 108 m/s? (b) How far will it travel in so doing? (a) Number i Units (b) Number i Units An automobile driver increasing the speed at a constant rate from 46 km/h to 60 km/h in 0.74 min. A bicycle rider speeds up at a constant rate from rest to 14 km/h in 0.74 min. What are the magnitudes of (a) the driver's acceleration and (b) the rider's acceleration? (a) Number i Units (b) Number i Units