WorksheetsPhysics and chemistry
Total questions: 15
Worksheet time: 8mins
If the speed of a sound is 340 m/s, how far from us would a person be if it takes us 5 s to hear her cries?
1700m
300m
4560m
1km
The Sun is 150 000 000 km from Earth. Calculate the minutes light takes to reach the Earth. The speed of the light is 3 · 108 m/s.
15 min
8.33 min
20 min
3 min
An object is moving with a velocity 10 m/s in the negative direction of axis x. The object is initially at point A in x = 4 m . Find the position of the object at 5 s.
37 m
-46 m
20 m
-20m
An object is moving with a velocity of 23 m/s in the positive direction of axis x. The final position of the object is 8 m. Which was the initial position if the traveled time is 5 s?
-107 m
55m
175m
-68m
An object is moving with constant velocity along axis x. The initial position is 5 m and the final position of the object is 13 m . Which is its velocity if the traveled time is 4 s?
-2m/s
2 m/s
-3m/s
8 m/s
Judith drives from Plymouth to Southampton, a
distance of 260 km, in 4 hours. She then drives from
Southampton to London, a distance of 145 km, in 1
hour and 30 minutes. Determine her average speed
for each journey.
1) She drove with an average speed of 65 Km/h in the first part and 96,7 Km/h in the second part.
2) The total average speed of the journey is 80,8 Km/h
3) None of the previous answers.
4) The 1st and 2nd choice are right.
A car is at rest and in10 seconds reaches a velocity of 20m/s. Which is its acceleration?
2 m/s2
2 m/s
3 m/s2
5 m/s2
A lorry is travelling at a velocity of 25 m/sand finds an object on the road and the driver has to brake to stop in 10 seconds. What is its acceleration?
-2.5 m/s2
-2.5 m/s
6 m/s2
-6 m/s2
En el movimiento rectilíneo uniforme MRU, la aceleración es
Nula
Positiva
Negativa
Depende del ejercicio
Si la velocidad de un móvil disminuye, su aceleración será
Positiva
Negativa
Positiva y negativa
No se puede determinar
El concepto de aceleración es:
Aumentar la velocidad
Disminuir la velocidad
Aumentar o disminuir la velocidad
Ninguna de las anteriores
Si la velocidad de un móvil disminuye, su aceleración será
Positiva
Negativa
Positiva y negativa
No se puede determinar
Para calcular la velocidad se requiere
El tiempo y el recorrido
El recorrido y el desplazamiento
La distancia y el tiempo
La aceleración y el móvil
En el movimiento rectilíneo uniforme MRU, la velocidad es
Nula
Positiva
Negativa
Constante
¿Cuál de los siguientes móviles tiene mayor velocidad?
