Forces 2 - vectors, resultant forces and work
Exam board
Category
Forces: Forces and motion
Inside
Includes answers
Resource type
Homework
Revision
Starter/Plenary
Worksheet
Maths skills
Algebra
This physics worksheet provides an excellent challenge for GCSE students. It includes five substantial structured questions.
The resource includes answers.
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Review this resource3 (e) is misleading. If the bicycle speeds up then the wind resistance will have increased. Could change this to "pedals harder"
06/11/2022
Excellent questions.
But watch out for wrong answer on the bicycle question:
"ii. Speed has no effect on the frictional force between the bicycle and the road surface."
2 problems here: frictional force between bike and road surface does not oppose the motion, rather it is in the the same direction as the motion. If what is meant is the rolling resistance of the tyre, then this will increase with speed. As will all the friction which opposes the motion, for example friction in the chain drive.
But watch out for wrong answer on the bicycle question:
"ii. Speed has no effect on the frictional force between the bicycle and the road surface."
2 problems here: frictional force between bike and road surface does not oppose the motion, rather it is in the the same direction as the motion. If what is meant is the rolling resistance of the tyre, then this will increase with speed. As will all the friction which opposes the motion, for example friction in the chain drive.
06/11/2022
21/05/2020
