Speed Equation
1
Question: "On an object of mass 1 kg moving along x axis with constant speed 8 m/s, a constant force 2N is applied in positive y direction. Find its speed after 4 seconds." Answer: v x = 8 m/s (constant along x-axis) v y = 0 (Initially) After 4s, Speed along y-axis, = 0 + a y t = 2 × 4 = 8 m/s After 4s, Hence, the magnitude of velocity (speed) after = =
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Finding speed using equation of motion and vectors Physics
Transcript of Speed Equation
Question: "On an object of mass 1 kg moving along x axis with constant speed 8 m/s, a constant
force 2N is applied in positive y direction. Find its speed after 4 seconds."
Answer: vx = 8 m/s (constant along x-axis)
vy = 0 (Initially)
After 4s, Speed along y-axis, = 0 + ayt
= 2 × 4
= 8 m/s
After 4s,
Hence, the magnitude of velocity (speed) after
=
=
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