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Jamal is skating on a sidewalk. His initial velocity is 0.0 m/s; 35 seconds later his velocity is 5.0 m/s. What is his acceleration? -0.14 m/s/s -7 m/s 0.14 m/s/s 7 m/s

Respuesta :

Answer:

answer is 0.1428

Explanation:

Data:- vf=5.0 , vi=0.0 , t=35 , a=? so appling first eq of motion vf=vi+at we have to find a=vf-vi/t , a=5.0-0.0/35 , a=5/35 ,a=0.1428m/sec²

Answer:

[tex]0.14m/s/s[/tex] or [tex]0.14m/s^2[/tex]

Explanation:

Acceleration is the rate at which the velocity of a body increases per unit time. Its S.I unit is meters per second per second. Mathematically it is given as follows;

[tex]a=\frac{v_1-v_o}{t}............(1)[/tex]

where [tex]v_1[/tex] is the velocity, [tex]v_o[/tex] the initial velocity and t is the time taken.

Given;

[tex]v_o=0.0m/s\\v_1=5.0m/s\\t=35s\\a=?[/tex]

We substitute all into equation (1) to calculate a as follows;

[tex]a=\frac{5.0-0.0}{35}\\a=\frac{5}{35}\\a=\frac{1}{7}\\a=0.14m/s/s[/tex]