Y11 INTERVENTION : Forces and energy

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Presentation transcript:

Y11 INTERVENTION : Forces and energy 1. 5 mins EXAM CONDITIONS demand 1 Question (grade C/D) 5 mins go through mark scheme 2. 10 mins Walking talking demand 2 Question (grade B) 3. 5 mins EXAM CONDITIONS demand 3 Question (grade A/A*) 5 mins go through mark scheme

1. 5 mins

Walking at constant speed the slope of the graph is steeper 1. 5 mins Walking at constant speed Standing still faster the slope of the graph is steeper Speed = distance/ time

Y11 INTERVENTION : Forces and energy 1. 5 mins EXAM CONDITIONS demand 1 Question (grade C/D) 5 mins go through mark scheme 2. 10 mins Walking talking demand 2 Question (grade B) 3. 5 mins EXAM CONDITIONS demand 3 Question (grade A/A*) 5 mins go through mark scheme

2. 10 mins

2. 10 mins 13 mm

2. 10 mins

2. 10 mins To reduce the error in measuring the extension of the spring The measurement is shorter with the ruler at an angle 0- 6 N Data gives a straight line through the origin

2. 10 mins

inelastically deformed 2. 10 mins Use a set square to line up the lowest coil of the spring with the ruler scale. P The spring has been inelastically deformed It went past the limit of proportionality

Y11 INTERVENTION : Forces and energy 1. 5 mins EXAM CONDITIONS demand 1 Question (grade C/D) 5 mins go through mark scheme 2. 10 mins Walking talking demand 2 Question (grade B) 3. 5 mins EXAM CONDITIONS demand 3 Question (grade A/A*) 5 mins go through mark scheme

3. 5 mins

3. 5 mins momentum (p) before = momentum (p) after zero = zero Forwards is positive to the right momentum (p) before = momentum (p) after zero = zero 0 = ( p skateboard ) + ( p skateboarder) ( p skateboard ) backwards = ( p skateboarder) forwards ( mv skateboard ) backwards = (MV skateboarder) forwards ( 1.8 x v ) backwards = (42 x 0.3) forwards ( 1.8 x v ) backwards = 12.6 forwards ( v ) backwards = 12.6 forwards 1.8 v = 7 m/s backwards

Y11 INTERVENTION : Forces and energy 1. 5 mins EXAM CONDITIONS demand 1 Question (grade C/D) 5 mins go through mark scheme 2. 10 mins Walking talking demand 2 Question (grade B) 3. 5 mins EXAM CONDITIONS demand 3 Question (grade A/A*) 5 mins go through mark scheme