At the end of a race a runner decelerates from a velocity of 9.40 m/s at...

At the end of a race a runner decelerates from a velocity of 9.40 m/s at a rate of 2.20 m/s².

(a)

How far in meters does she travel in the next 5.10 s? (Assume the deceleration of 2.20 m/s² is constant over the full 5.10 s.)

(b)

What is her final velocity in m/s?

m/s

(c)

Evaluate the result. Does it make sense?

Solutions

Expert Solution

genius_generous answered 1 year ago

Next > < Previous

Related Solutions

The leader of a bicycle race is traveling with a constant velocity of +11.4 m/s and...

The leader of a bicycle race is traveling with a constant velocity of +11.4 m/s and is 11.6 m ahead of the second-place cyclist. The second-place cyclist has a velocity of +9.90 m/s and an acceleration of +1.20 m/s2. How much time elapses before he catches the leader?

To qualify as a contestant in a race, a runner has to be in the fastest...

To qualify as a contestant in a race, a runner has to be in the fastest 16% of all applicants. The running times are normally distributed, with a mean of 58 min and a standard deviation of 5 min. To the nearest minute, what is the qualifying time for the race?

A ball was tossed from a height of 1.20 m, initial velocity of 13.0 m/s at...

A ball was tossed from a height of 1.20 m, initial velocity of 13.0 m/s at an angle 26.0° above the horizontal. The ball hits the ground at a horizontal distance of 20.0 m from the launch point. Use 10.0 N/kg for g. a) Find in m/s the magnitude of the velocity of the ball when it is at the top most position of its trajectory b) Find in m/s2 the magnitude of the acceleration of the ball when it...

1) A projectile is launched from the floor with an initial velocity of 5.0 m/s at...

1) A projectile is launched from the floor with an initial velocity of 5.0 m/s at an angle of 30 degrees upward of horizontal. a) For how long is the projectile in the air, as measured by the observer who launches the projectile? b) How far away horizontally from the launch point does the projectile land, as measured by the observer who launched it? c) It turns out that this projectile was launched and landed inside of a vehicle that...

A girl throws a rock horizontally, with a velocity of 10 m/s, from a bridge. It...

A girl throws a rock horizontally, with a velocity of 10 m/s, from a bridge. It falls 20 m to the water below. a) How long does it take for the rock to reach the water? b) How far does the rock travel horizontally before striking the water, assuming negligible air resistance? c) what is the final horizontal velocity of the ball ? d)What is the final vertical velocity of the ball? e) the magnitude of the final velocity of...

In a relay race, runner A is carrying the baton and has a speed of 2.60...

In a relay race, runner A is carrying the baton and has a speed of 2.60 m/s. When he is 25.0 m behind the starting line, runner B starts from rest and accelerates at 0.0600 m/s2. How long afterwards will A catch up with B to pass the baton to B?

A wind turbine with cut-in velocity of 8m/s and cut-out velocity of 30 m/s is installed...

A wind turbine with cut-in velocity of 8m/s and cut-out velocity of 30 m/s is installed at a site with Weibull shape factor 2.4 and scale factor of 9.8 m/s. for how many hours in a day, will the turbine generate power, estimate the probability of wind velocity to exceed 30 m/s.

A batted baseball is hit with a velocity of 49.7 m/s, starting from an initial height...

A batted baseball is hit with a velocity of 49.7 m/s, starting from an initial height of 4 m. Find how high the ball travels in two cases: (a) a ball hit directly upward (b) a ball hit at an angle of 70 degrees. also find how long the ball is in the air in both cases

Steam issues from the nozzle of a De-level turbine at a velocity of 1000 m/s at...

Steam issues from the nozzle of a De-level turbine at a velocity of 1000 m/s at an angle of 20ᵒ. The blade velocity is 300 m/s and blades are symmetrical. The mass flow rate is 0.5 kg/s and a friction factor is 0.8. With the help of velocity diagram, determine 1) Blade efficiency 2) Power developed 3) Stage efficiency if the nozzle efficiency is 95%

A 30 kg projectile is launched from the ground at an initial velocity of 300 m/s...

A 30 kg projectile is launched from the ground at an initial velocity of 300 m/s at an angle of 45 degrees above the horizontal. If air resistance is ignored, determine the following: a. The projectile's speed at 2000 meters above the ground. b. The total amount of energy the object has at 3000 m. c. The maximum height of the projectile. d. The maximum distance the projectile travels horizontally.

Subjects