6. Space physics
A section of Physics, 5054
Listing 10 of 58 questions
shows the planet Venus orbiting the Sun in a circular orbit at constant speed. circular orbit Venus Sun (not to scale) A force acting on Venus keeps it moving in a circle. State the name of this force and the object that causes it. On , draw an arrow through Venus that represents the direction of its acceleration. The size of this acceleration is 9.7 × 10–3 m / s2 and the mass of Venus is 4.9 × 1024 kg. Calculate the size of the force acting on the planet. force = As time passes, the planet Venus moves a considerable distance around the circular orbit. State why no work is done by the force acting on the planet as it moves.
5054_w10_qp_21
THEORY
2010
Paper 2, Variant 1
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shows a satellite travelling at a constant speed in a circular orbit around the Earth. satellite (not to scale) State how speed differs from velocity. As it orbits the Earth, the satellite is experiencing an acceleration. Explain, in terms of its velocity, why the satellite is accelerating. On , draw an arrow, starting on the satellite, to show the direction of the satellite’s acceleration. As the satellite orbits the Earth, it experiences a force due to gravitational attraction. State and explain whether this force does work on the satellite and state whether the energy of the satellite is affected.
5054_w18_qp_22
THEORY
2018
Paper 2, Variant 2
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The planet Venus orbits the Sun at a constant speed of 3.5 × 104 m / s and takes a time TV to complete one orbit. Venus is always 1.1 × 1011 m from the Sun. Calculate TV. TV = s Explain why speed is a scalar quantity. Velocity is a vector quantity. Explain what happens to the velocity of Venus as it orbits the Sun. There is a resultant force on Venus as it orbits the Sun. The force is perpendicular to the direction of the motion of Venus. State why this force is needed. shows the orbit of Venus around the Sun. On , draw an arrow to show the resultant force on Venus. Sun Venus State what causes the force acting on Venus. One planet in the Solar System is closer to the Sun than Venus. State the name of this planet. Compare the time that this planet takes to complete one orbit of the Sun with TV and explain the difference.
5054_w23_qp_21
THEORY
2023
Paper 2, Variant 1
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Questions Discovered
58