Forces and motion 2 : Newton's second law in 2 dimensions

Question 1

Newton’s 2nd law in 2 dimensions

Answer 1

F = ma
- where F is the resultant force, N
- where m is the mass, kg
- where a is the acceleration, metres per second squared

Question 2

Problems involving slopes

Answer 2

• the acceleration is parallel to the slope
• acceleration in the direction perpendicular to the slope is zero
• resolve forces into components parallel and perpendicular to the slope