In a boat race, boat A is leading boat B by 50 m and both boats are traveling at a constant speed of 180 km/h. At t=0, the boats accelerate at constant rates. Knowing that when B passes A, t=8 s and v₁ = 225 km/h, determine (a) the acceleration of A, (b) the acceleration of B.

In a boat race, boat A is leading boat B by 50 m and both boats are traveling at a constant speed of 180 km/h. At t=0, the boats accelerate at constant rates. Knowing that when B passes A, t=8 s and v₁ = 225 km/h, determine (a) the acceleration of A, (b) the acceleration of B.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter3: Motion Along A Straight Line

Section: Chapter Questions

Problem 42P: An airplane, starting from rest, move down the runway at constant for 18 s and then takes off at a...

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Concept explainers

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.

Question

i need the answer quickly

50 m
In a boat race, boat A is leading boat B by 50 m
and both boats are traveling at a constant
speed of 180 km/h. At t=0, the boats
accelerate at constant rates. Knowing that
when B passes A, t=8s and v₁ = 225 km/h,
determine (a) the acceleration of A, (b) the
acceleration of B.
aA=0.563 (m/s2), aB = 2.13 (m/s2) O
aA=1.563 (m/s2), aB = 3.13 (m/s2) O
aA=2.563 (m/s2), aB = 4.13 (m/s2)
aA=3.563 (m/s2), aB = 5.13 (m/s2) O

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