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a body has an initial speed of 10m/s and a uniform acceleration of 2 m/s2 in opposite direction. Find the distance travelled by the body in 7 seconds

a body has an initial speed of 10m/s and a uniform acceleration of 2 m/s2 in opposite direction. Find the distance travelled by the body in 7 seconds

Grade:11

2 Answers

Parth Verma
49 Points
5 years ago
Do not use second eq. of motion directly because distance is asked and not displacement. So first find the time at which its velocity will be zero, which you will get t = 5 s. Now find displacement from t = 0 to t = 5 s. Now find magnitude of displacment from t = 5 to t = 7 s. Now add both the quantities. You will get the ans. 49 m.
neeraj
10 Points
5 years ago
Is the answer not 25 + 4 = 29 m ?.......................................
 
 
 
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