Linear kinematics

Question 1

What does TUVAS stand for?

Answer 1

time = t
initial velocity = u
final velocity   = v
acceleration   = a
displacement = s

Question 2

what is the equation for velocity?

Answer 2

velocity(v) = change in displacement (s) ÷ time taken(t)

Question 3

what is the equation for acceleration?

Answer 3

acceleration = change in velocity ÷ time taken for change

Question 4

what are the units for velocity and acceleration?

Answer 4

velocity= m.s-1 (m/s)
acceleration= m.s-2 (m/s2, m/s/s)

Question 5

Vectors-What is Distance?

Answer 5

Scalar           Vector              Units
Distance   Displacement        (m)

Question 6

Vectors-What is Speed?

Answer 6

Scalar     Vector      Units
Speed   Velocity     (m.s-1)

Question 7

Velocity time sketch graphs- what are the y, x axis and the space under the graph

Answer 7

Y axis= velocity
X axis= time
space under graph= distance travelled

Question 8

equation for velocity time graphs

Answer 8

s = ½ (u + v).t

Question 9

what is another equation for displacement?

Answer 9

s=ut=½(u+v)t

Question 10

what is newtons first law of inertia?

Answer 10

an object will remain stationary or in uniform velocity unless acted upon by an external, unbalanced force

Question 11

gravity definition

Answer 11

gravity causes a force, anything with a mass, acts vertically downwards and causes acceleration of 9.8 ms2 (g)

Question 12

what are the 4 equations do you need to know for velocity and acceleration?

Answer 12

s=ut=½(u+v)t
s = ½ (u + v).t
v=u+at
v2=u2+2as