answer : the significant digit is 6
now, on multiplying
now, the significant digit is 6.
hence, this is the required solution.
answer : correct option is (c) velocity.
when an object is moving with a constant speed in a circular path, it is said to be moving in circular motion.
speed is defined as distance travelled per unit time. in circular motion object moves with constant speed but it keep on changing its direction i.e. its velocity is constantly changing.
also in circular motion, the object moves tangentially.
hence, the velocity of object is constantly changing.
v₀ = initial speed of the blood = 0
v = final speed of the blood = 0.76
a = average acceleration of red blood cell
t = time of contraction = 250 ms = 0.250 s since 1 ms = 0.001 s
using the equation
v = v₀ + a t
inserting the values
0.76 = 0 + a (0.250)
a = 3.04