Forces at work (PCV CPC)

Image Question Topic
Why is avoiding harsh braking vital in a fully laden PCV for Emma? Forces at work (PCV CPC)
Why is more power needed uphill, as Sophie observes? Forces at work (PCV CPC)
Why is progressive braking crucial in buses, according to Sophie? Forces at work (PCV CPC)
Why is smooth acceleration crucial in public transport, as per Tom’s learning? Forces at work (PCV CPC)