Class 9th Science Session 2022-23 Class 9 Science Terminal Exams MCQ Solutions 9th Science Terminal Exam Based MCQ Extra Questions Class IX Science MCQ Extra Questions Answers
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As momentum, p = m x v = 0.2 x 400 = 2/10 x 400 = 80 kg m/s
More force is needed to stop a cricket ball (which has more mass) and less force is needed to stop a tennis ball (which has less mass). The force required to stop a moving ball is proportional to mass (m) ...
The central vacuole of some plant cells can occupy 50-90% of the cell volume.
Chloroplasts are involved in trapping light energy for photosynthesis. Leucoplast are colourless plastids that stores, material such as starch, oil and protein granules. Chromplasts are the coloured plastids that imparts colours to the plant.