A 1 kg ostrich egg is thrown from a height of 1.5 m. The egg hits the ground and breaks. What is the kinetic energy of the egg just before it hits the ground?
When an object is dropped it accelerates at a rate of 9.8 m/s2. This means that the velocity of the object increases at a rate of 9.8 m/s every second. The velocity of the egg just before it hits the ground can be calculated using the equation:
v = u + at
where v is the final velocity u is the initial velocity a is the acceleration (9.8 m/s2 in this case) and t is the time taken.
The initial velocity of the egg (u) is 0 m/s as it is not moving before it is thrown. The time taken (t) can be calculated using the equation:
t = d/v
where d is the distance travelled and v is the velocity. The distance travelled is the height from which the egg is dropped (1.5 m) so the equation becomes:
t = 1.5/9.8
t = 0.153 seconds
The final velocity of the egg can therefore be calculated as:
v = u + at
v = 0 + (9.8 x 0.153)
v = 1.5 m/s
The kinetic energy of an object is given by the equation:
KE = ½mv2
where KE is the kinetic energy m is the mass of the object and v is the velocity. The mass of the ostrich egg is 1 kg.
KE = ½ x 1 x (1.5)2
KE = 1.125 J
How much does an ostrich egg weigh?
1kg
How fast can an ostrich run?
70km/h
What is the average lifespan of an ostrich?
30-40 years
How many eggs does an ostrich lay in a year?
20-40
How big is an ostrich egg?
15cm long 10cm wide
How long does it take for an ostrich egg to hatch?
42 days
What do ostriches eat?
Plants insects lizards and small mammals
Where do ostriches live?
Africa
Can ostriches fly?
No
How tall is an ostrich?
2-3m
What is the top speed of an ostrich?
97.
5km/h
How much does an ostrich weigh?
150-230kg
What is the average wingspan of an ostrich?
2m
How many toes does an ostrich have?
2
What is the average eggs per clutch for an ostrich?
10-12
