Which of these statements is true of plant cells?[Plant cell]
A They have no cell membranes. incorrect answer
B They can make their own nutrients. incorrect answer
C They work independently of one another. incorrect answer
D They are prokaryotic.

The force will determine the acceleration.

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?

What is friction? how does it affect the motion of an object?