A comet is heading for Jupiter with acceleration a = 50 kms-2. The vel

1.	A comet is heading for Jupiter with acceleration a = 50 kms-2. The velocity of the comet at time ”t” is given by f(t) = at2 – at + 1. Then the velocity at time t = 5 seconds is …(1) 900 kms-1(2) 1001 kms-1(3) 2001 kms-1(4) 50 kms-1
Answer» (2) 1001 kms^-1 f(t) = at²– at + 1 m = 50(5)² – 50(5) + 1 = 1250 – 250 + 1 = 1001 kms^-1

A comet is heading for Jupiter with acceleration a = 50 kms-2. The velocity of the comet at time ”t” is given by f(t) = at2 – at + 1. Then the velocity at time t = 5 seconds is …(1) 900 kms-1(2) 1001 kms-1(3) 2001 kms-1(4) 50 kms-1

Answer»

(2) 1001 kms^-1

f(t) = at²– at + 1

m = 50(5)² – 50(5) + 1

= 1250 – 250 + 1

= 1001 kms^-1