3- A man walks on a straight road from his home to a market 2.5 km away with a speed of 5 km/hr. Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km/hr. Find The average speed of the man over the interval of time o to 40 min. 4- The motion of a particle is described by the equation x = a + bt? where a =15cm and b = 3cm. find the velocity at time 3 sec. 5- The displacement of the particle is given by y= a + bt + ct? - dt'. Find the initial velocity and acceleration.

Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter6: Motion In Two Dimensions
Section: Chapter Questions
Problem 84A
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3- A man walks on a straight road from his home to a market
2.5 km away with a speed of 5 km/hr. Finding the market
closed, he instantly turns and walks back home with a speed
of 7.5 km/hr. Find The average speed of the man over the
interval of time o to 40 min.
4- The motion of a particle is described by the equation x = a
+ bt? where a =15cm and b = 3cm. find the velocity at time 3
sec.
5- The displacement of the particle is given by y = a + bt + ct?
- dt'. Find the initial velocity and acceleration.
Transcribed Image Text:3- A man walks on a straight road from his home to a market 2.5 km away with a speed of 5 km/hr. Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km/hr. Find The average speed of the man over the interval of time o to 40 min. 4- The motion of a particle is described by the equation x = a + bt? where a =15cm and b = 3cm. find the velocity at time 3 sec. 5- The displacement of the particle is given by y = a + bt + ct? - dt'. Find the initial velocity and acceleration.
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