19,879
edits
Changes
→Using v, s and t
{| class="wikitable"
| style="height:20px; width:200px; text-align:center;" |A [[wave]] travels 1000m in a time of 12.5s. Calculate the [[magnitude]] of the [[velocity]] of the [[wave]] correct to two [[Significant Figures|significant figures]].
| style="height:20px; width:200px; text-align:center;" |[[The Moon]] is approximately 390,000km away from the Earth. It takes a A [[Radio Wave]] 1.3 seconds to travel that travels at 300,000,000m/s from [[distanceThe Moon]]. Calculate to the [[magnitudeEarth]] of . Calculate the time taken by the [[velocityRadio Wave]] of the to reach [[Radio WaveEarth]] correct to two [[Significant Figures|significant figures]].| style="height:20px; width:200px; text-align:center;" |An [[Alpha Particle|alpha particle]] can travels around 6cm from a source taking for 4.0ns at a [[velocity]] of 15,000,000m/s before colliding with an [[air]] [[molecule]]. Calculate the [[magnitudedisplacement]] of its the [[velocityAlpha Particle|alpha particle]] on this from the start to the end of its journey correct to two [[Significant Figures|significant figures]].
|-
| style="height:20px; width:200px; text-align:left;" |'''1. State the known quantities'''
s = 390,000km = 390,000,000m
| style="height:20px; width:200px; text-align:left;" |'''1. State the known quantities'''
v = 15,000,000m/s = 6cm = 0.06m
t = 4.0ns = 4.0 x 10<sup>-9</sup>m
|-
| style="height:20px; width:200px; text-align:left;" |'''2. [[Substitute (Maths)|Substitute]] the numbers into the [[equation]] and [[Solve Evaluate (Maths)|solveevaluate]].'''
<math>v = \frac{s}{t}</math>
<math>v = 80m/s</math>
| style="height:20px; width:200px; text-align:left;" |'''2. [[Substitute (Maths)|Substitute]] the numbers into the [[equation]] and [[Solve Evaluate (Maths)|solveevaluate]].'''<math>v = \frac{s}{t}</math> <math>300000000 = \frac{390000000}{t}</math>
| style="height:20px; width:200px; text-align:left;" |'''2. [[Substitute (Maths)|Substitute]] the numbers and [[Evaluate (Maths)|evaluate]].'''
<math>v = \frac{s}{t}</math>
<math>v 15000000 = \frac{390000000s}{14.0 \times 10^{-9}}</math>|-| style="height:20px; width:200px; text-align:left;" |'''3. [[Rearrange (Maths)|Rearrange]] the equation and [[Solve (Maths)|solve]].''' Already solved.| style="height:20px; width:200px; text-align:left;" |'''3. [[Rearrange (Maths)|Rearrange]] the equation and [[Solve (Maths)|solve]].'''<math>300000000 = \frac{390000000}{t}</math> <math>300000000t = 390000000</math>
<math>v t = 300,000,000m/s\frac{390000000}{300000000}</math>
<math>t = 1.3s</math>| style="height:20px; width:200px; text-align:left;" |'''23. [[Substitute Rearrange (Maths)|SubstituteRearrange]] the numbers into the [[equation]] and [[Solve (Maths)|solve]].'''
<math>v 15000000 = \frac{s}{t4.0 \times 10^{-9}}</math>
<math>v s = 15000000 \frac{0.06}{times 4.0 \times 10^{-9}}</math>
<math>v s = 15,000,000m/s0.060m</math>
|}
====Using a, v, u and t====
====Using v, u a and s====