Difficult to tackle a heavier player travelling at the same speed?
because their body mass.
is
mere
the stick. in terms of kinetic energy and work
b) a hockey player traps a fast ball with deft use of the stick. in terms of ki
done, why is it more difficult to stop a faster ball that is otherwise identical
because the veloci
c) a car of mass 800 kg is travelling at 30 m/s (almost im
elling at 30 m/s (almost 70 mph). the car then brakes suddenly
and stops with a braking distance of 75 m. find:
i) the initial kinetic energy of the car 360oo gu bolo 360o
ii) the final kinetic energy of the car 300oooj
iii) the change in kinetic energy of the car 330,00oj
iv) the work done on the car by the brakes
v) the braking force on the car.

Which describes an object in projectile motion? check all that apply.a.gravity acts to pull the object downb.the object moves in a straight path.c.the forward velocity of the object is 0 m/s.d.the object’s inertia carries it forward.e.the path of the object is curved.

The inside surface of a cylindrical-shaped cave of inner diameter 1.0 m is continuously covered with a very thin layer of water. the cave is very long and it is open on both ends. the water on the cave surface is at a constant temperature of 15.5 °c. the cave is constantly exposed to wind such that 15.5 °c air flows through the cave at 4.5 m/s. the kinematic viscosity of the air is 14.66 x 10-6 m2/s and the molecular diffusion coefficient of water vapor in the air is 0.239 x 10-4 m2/s. because the cave diameter is so large, the flow of wind down the length of the cave, in the x direction, can be treated like it is external flow and the cave surface can be approximated as flat where appropriate. calculate the x value, in a) the transition to turbulent flow occurs at rex meters, where the air flow transitions from laminar to turbulent along the inside surface of the cave b) calculate the x value, in meters, where the bulk steady state concentration of water vapor in the air flowing in the cave is 10% of the saturation concentration. assume the air at the surface of the water layer is 100% saturated with water vapor. assume the wind entering the cave contained no moisture before it entered the cave. take into account the transition from laminar to turbulent flow when solving part b

Which of the following will cause an induced current in a coil of wire? the constant field of the earth passing through the coil a magnet resting near the coil a magnet being moved into or out of the coil a wire carrying a constant current near the coil