CP2 forces & motion
Quiz by neil muir
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18 questions
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- Q1What is the gravitational field strength on our planet ?5 N/ Kg20N/kg10 N / kg15 N /Kg30s
- Q2What is the units for 'weight' ?tonnesnewtonsgramsKilograms30s
- Q3What is the equation for calculating weight ?weight = massweight= mass - gravity strengthweight= mass + gravity strengthweight = mass x gravity strength30s
- Q4Calculate the weight of a 45 Kg dog ( remember how strong gravity is on our planet)360 N452 N455 N450 N30s
- Q5If the upthrust on the wings of a plane is 5000 N and the weight of the plane is 3000 N. What size is the resultant force and what is it's direction ?2000 N upwards2000 N downwards8000 N upwards2000 N downwards30s
- Q6What two distances make up the total stopping distance ?braking distance + reaction timebraking distance + thinking distanceaccelerating distance + braking timelooking distance + driving distance30s
- Q7What will happen if the driver of a car has been drinking ?Thinking distance will increasebraking distance will decreaseBraking distance will increaseThinking distance will decrease30s
- Q8What part of stopping distance will worn tyres affect ?braking distancereaction timethinking distancebraking time30s
- Q9What is a typical reaction time of a human ?0.350.25 seconds0.50.130s
- Q10What is the equation that links force, mass and acceleration ?force = mass - accelerationForce = mass x accelerationacceleration = force x massmass = force x acceleration30s
- Q11What is the force needed to accelerate a mass of 6 Kg by 3 m/s218 N1800 N2 N0.5 N30s
- Q12Name a factor that can affect a driver's reaction time .type of tyresspeed of cartirednesstype of road surface30s
- Q13How will a wet surface of a road affect the stopping distance of a car ?thinking distance will increasebraking distance will decreasereaction time will increasebraking distance will increase30s
- Q14What is meant by 'balanced forces ' ?When opposite forces are a similar sizeForces that are the same size and act in opposite directionsForces that balance objectsForces that are the same size45s
- Q15What is the force needed to accelerate a mass of 500g by 2 m/s2 ?1000 N0.04 N250 N1 N45s