In a relay race, runner A is carrying the baton and has a speed of 2.80 m/s. When he is 25.0 m behind the starting line, runner B starts from rest and accelerates at 0.0800 m/s2. How long afterwards will A catch up with B to pass the baton to B?

A) 5.17 s
B) 10.5 s
C) 11.9 s
D) 20.4 s
E) Runner A never catches up.


B

Physics & Space Science

You might also like to view...

Ideal Gas Law: A 0.40-m3 gas tank holds 7.0 moles of ideal diatomic nitrogen gas at a temperature of 290 K. The atomic mass of nitrogen is 14.0 g/mol. What is the pressure of the gas? (R = 8.31 J/mol ? K, 1 atm = 101 kPa)

A. 42 atm B. 37 atm C. 32 atm D. 27 atm E. 22 atm

Physics & Space Science

Time Dilation: A pion is an unstable particle that has a mean lifetime of 2.55 × 10-8 s. This is the time interval between its creation in a nuclear process and its extinction into decay products, as measured in a frame of reference at rest with respect to the pion. An average pion is traveling at 0.230c relative to Earth. How far does it travel in its lifetime, relative to Earth?

A. 2.07 m B. 1.81 m C. 2.23 m D. 3.22 m E. 3.50 m

Physics & Space Science

Equations are used to

A. All of the above B. describe how quantities change together C. define a concept D. describe a property

Physics & Space Science

Which block has given up more energy to the water?

A. Block A B. Block B C. The quantity is question is the same for both blocks.

Physics & Space Science