Physics (AS & A Level) · May / June 2020 · Paper 11 · Question 11

A wooden block rests on the rough surface of a board. One end of the board is then raised until the block slides down the board at constant velocity v. What describes the forces acting on the block when it is sliding with constant velocity?

1. Africtional force on block: down the board; resultant force on block: down the board
2. Bfrictional force on block: down the board; resultant force on block: zero
3. Cfrictional force on block: up the board; resultant force on block: down the board
4. Dfrictional force on block: up the board; resultant force on block: zero

As printed in the paper