Aparticle moves along the x axis. it is initially at the position 0.250 m, moving with velocity 0.050 m/s and acceleration -0.240 m/s2. suppose it moves with constant acceleration for 3.70 s. (a) find the position of the particle after this time. m (b) find its velocity at the end of this time interval. m/s
he walks 33° north of east for 80 m starting from the center. the drawing is made according to the statement.
average speed = (distance covered) / (time to cover it)
-- traveling at 40 mph for 1 hour, the distance covered is 40 miles.
-- traveling at 60 mph for 1 hour, the distance covered is 60 miles.
-- total distance covered = (40 miles) + (60 miles) = 100 miles
-- total time = (1 hour) + (1 hour) = 2 hours
-- average speed = (100 miles) / (2 hours)
average speed = 50 miles per hour
answer; ////(a)///100kg 1.0m
elastic force on the balloon
f = kx
here we know that
k = 115 n/m
x = 0.8 m
f = 115 n/m (0.8m) = 92 n
elastic potential energy
u = 36.8 j
by energy conservation
initial kinetic energy = final potential energy
u = ke
as we know that
by solving above equation we have