suvat

suvat Letter What it stands for Units Examples SI Unit s Displacement m, km, etc km m u Initial velocity Distance/ time km/ hr m/s v Final velocity a Acceleration Distance/ time/ time m/ s/ s m/s/s t Time Seconds, minutes, hours, etc s, mins, hrs

Wait ‘til this baby gets to 88 km/hr! Question 1 A child on a skateboard is travelling at 6 m s-1, he ignites a rocket which burns for 10 s giving a final velocity of 13 m s-1. What acceleration did the skateboard achieve? Wait ‘til this baby gets to 88 km/hr!

Question 2 An insane father allows his teenage daughter to ride a jet-powered bike. Starting from rest it accelerates at 2 m s-2. How long did it take to reach 12 m s-1? How far did it go in this time?

Question 3 A man is walking along, minding his own business at 1.5 m s-1. A fairly benign Terrier chases the man. The man accelerates at 0.5 m s-2 for 30 m, until the dog gets bored. What is his new velocity? How long did this embarrassing incident take place for? OMG!!1!!11 Play with me!

More questions!!!! A car drives with a constant speed of 84 kilometers per hour. How long will it take to travel a distance of 140 kilometers? 2. A train travels with a constant speed of 36 kilometers per hour. How far can it travel in 1 hour 30 minutes? 3. Juan roller skates 42 kilometers in 210 minutes. What is his average speed in kilometers per hour? 4. Julia roller skates 9 kilometers with a constant speed of 18 km/h and another 19 kilometers with a constant speed of 12 km/h. How much time in total does she take to travel these distances? 5. Noah rides his motorcycle 65 km with a constant speed of 60 km/h and another 204 km with a constant speed of 72 km/h. What is his average speed for the total trip?

Lemon & Herb Medium HOT EXTRA HOT A car accelerates uniformly from 5 m/s to 15 m/s taking 7.5 seconds. How far did it travel during this period. A runner starts from rest, runs for 30 seconds at a uniform acceleration of 2 m/s2, how fast are they travelling at the end? A car accelerates uniformly at a rate of 3 m/s2 for 20 seconds from rest. How far has it travelled? A formula 1 car is travelling at 15 m/s before it accelerates uniformly to 30 m/s over 20 s. How far has it travelled? Medium A train starts from rest and accelerates uniformly at 1.5 m/s2 until it attains a speed of 30 m/s. Find the time taken and the distance travelled. In travelling the 70 cm along a rifle barrel, a bullet uniformly accelerates from rest to a velocity of 210 m/s. Find the acceleration involved and the time taken for which the bullet is in the barrel. A particle is accelerated from 1 m/s to 5 m/s over a distance of 15 m. Find the acceleration and the time taken. A car accelerates uniformly from rest and after 12 seconds has covered 40 m. What are its acceleration and its final velocity? A car is being driven along a road at 25 m/s when the driver suddenly notices that there is a fallen tree blocking the road 65 m ahead. The driver immediately applies the brakes giving the car a constant retardation of 5 m/s2. How far in front of the tree does the car come to rest? HOT Initial velocity 5 m/s, final velocity 36 km/hr, acceleration 1.25 m/s/s. Distance? A train is uniformly slowed down from 35 m/s to 21 m/s over a distance of 350 m. Calculate the acceleration and the time taken to come to rest from the 35 m/s.  A particle moves with uniform acceleration 0.5 m/s2 in a horizontal line ABC. The speed of the particle at C is 80 m/s and the times taken from A to B and from B to C are 40 and 30 seconds respectively. Calculate (a) Speed at A (b) Distance BC EXTRA HOT A train travels along a straight piece of track between 2 stations A and B. The train starts from rest at A and accelerates at 1.25 m/s2 until it reaches a speed of 20 m/s. It then travels at this speed for a distance of 1560 m and then decelerates at 2 m/s2 to come to rest at B. Find Distance from A to B (b) Total time taken for the journey (c) Average speed for the journey

Lemon & Herb Medium HOT EXTRA HOT A car accelerates uniformly from 5 m/s to 15 m/s taking 7.5 seconds. How far did it travel during this period. 75 m A runner starts from rest, runs for 30 seconds at a uniform acceleration of 2 m/s2, how fast are they travelling at the end? 60 m/s A car accelerates uniformly at a rate of 15 m/s2 for 20 seconds from rest. How far has it travelled? 600 m A formula 1 car is travelling at 15 m/s before it accelerates uniformly to 30 m/s over 20 s. How far has it travelled? 450 m Medium A train starts from rest and accelerates uniformly at 1.5 m/s2 until it attains a speed of 30 m/s. Find the time taken and the distance travelled. 20 s 300 m In travelling the 70 cm along a rifle barrel, a bullet uniformly accelerates from rest to a velocity of 210 m/s. Find the acceleration involved and the time taken for which the bullet is in the barrel. 31500 ms-2 0.0067 secs A particle is accelerated from 1 m/s to 5 m/s over a distance of 15 m. Find the acceleration and the time taken. 5 secs 0.8 ms-2 A car accelerates uniformly from rest and after 12 seconds has covered 40 m. What are its acceleration and its final velocity? 0.55 ms-2 6.67 ms-1 A car is being driven along a road at 25 m/s when the driver suddenly notices that there is a fallen tree blocking the road 65 m ahead. The driver immediately applies the brakes giving the car a constant retardation of 5 m/s2. How far in front of the tree does the car come to rest? 2.5 m before the tree HOT Initial velocity 5 m/s, final velocity 36 km/hr, acceleration 1.25 m/s/s. Distance? 30 m A train is uniformly slowed down from 35 m/s to 21 m/s over a distance of 350 m. Calculate the acceleration and the time taken to come to rest from the 35 m/s. -1.12 ms-2, 31.25 secs A particle moves with uniform acceleration 0.5 m/s2 in a horizontal line ABC. The speed of the particle at C is 80 m/s and the times taken from A to B and from B to C are 40 and 30 seconds respectively. Calculate (a) Speed at A (b) Distance BC a) 45 ms-1 b) 2175 m EXTRA HOT A train travels along a straight piece of track between 2 stations A and B. The train starts from rest at A and accelerates at 1.25 m/s2 until it reaches a speed of 20 m/s. It then travels at this speed for a distance of 1560 m and then decelerates at 2 m/s2 to come to rest at B. Find (a) Distance from A to B 1820 m (b) Total time taken for the journey 104 seconds (c) Average speed for the journey 17.5 ms-1