For s = 4.9 t², the instantaneous velocity at t = 2 s (taken as the limit of average velocity) is:
A19.6 m/s
B14.7 m/s
C9.8 m/s
D24.5 m/s
Answer & Solution
Correct answer: A. 19.6 m/s
ds/dt = 9.8 t; at t = 2 this equals 19.6 m/s.
Related questions
Penalty for wrong answers : THERE WILL BE PENALTY FOR WRONG ANSWERS MARKED BY A CANDIDATE Penalty for wrong answers : THERE WILL BE PENALTY FOR WRONG ANSWERS MARKED BY A CANDIDATE For [[1,2],[2,4]], the determinant equals:If A is invertible, |A^{−1}| equals:For a 3 × 3 non-singular A with |A| = 5, the value of |adj A| is:For a non-singular square matrix A of order n, |adj A| equals:For non-singular A, B of the same order, (AB)^{−1} equals:For a non-singular A, (A^{−1})^{−1} equals: